Welcome to CNN.

10.

A shake up in the U.

S.

Government leads off today's show.

Yesterday, the White House announced that Randolph Tex Alice, the director of the U.

S.

Secret Service, would be leaving his position.

Director Alice says he was told weeks ago that changes were coming.

The White House thank him for his decades of service and said he did a great job.

But the Secret Service came under scrutiny recently after an arrest was made at a resort in Florida owned by U.

S President Donald Trump.

He's met several international leaders at his Mar a Lago club, and the accused trust pastor is a Chinese woman who'd gotten past security carrying Chinese passports and a flash drive with computer threatening malware.

Secret Service says it does not decide who gets into the resort, but the incident raised security questions, even though the White House says Alice's departure isn't related to it.

Meantime, Alice's boss, Homeland Security Secretary Kiersten Nielsen, is leaving her job.

President Trump made that announcement on Sunday.

In her resignation letter, Secretary Nielsen praised the department's workers for their service and sacrifices and said she hoped the next secretary would have congressional support in fixing the laws that have quote, impeded our ability to fully secure America's borders.

Southern border with Mexico has been a major focus of the Trump administration.

Last month, U.

S officials estimated they'd stopped 100,000 people there from entering the U.

S illegally.

The government says that's the highest monthly number of migrants in more than a decade.

Observers say the president was getting more and more frustrated about it.

He even threatened to close the border.

Congressional Democrats say Secretary Nielsen's resignation shows how the Trump Administration's border security and immigration policies have failed.

Congressional Republicans say Neilson served honorably and that they're confident the Homeland Security Department is in good hands.

Kevin Mack, a lean in the current U.

S Customs and border commissioner, will serve as temporary D.

H s secretary until Nielsen's replacement is confirmed by the Senate.

Well, really, what's going on at the border is it's almost like two different things.

This confluence of events, D.

H s and government officials are predicting a system wide failure Because of these increased numbers of migrants told everybody, This is you have a national emergency at our border with everything that the federal government officials are saying there is also coming with it, a great deal of scrutiny, many critics of the Trump administration are saying what they're trying to do is to create this sense of chaos to further their case for the national emergency and constructing more border wall.

What we see is that our community is being instrumental ized as a tool in a larger political game.

I'm at the Macallan Brody's terminal trucks are supposed to be coming in here from Mexico.

You see the pin ya out of there with fresh fruits, vegetables and other girls.

When you go to the grocery store and you select your fruits and vegetables are both likely coming from this part of the country.

Because of the migrant surge Border Patrol has re allocated.

Resource is from the port of entry to areas where migrants need to be processed.

For the first time, the United States says part of another nation's government is a foreign terrorist organization.

That other nation is Iran, in the part of its government that received the designation is the Islamic Revolutionary Guard Corps, or IRGC.

According to Encyclopedia Britannica, This is the second largest part of Iran's military behind its army.

The IRGC leads or supports Iranian forces in both internal conflicts and international war, and U.

S.

Government officials cited several examples of how the Iranian unit has participated in violence worldwide.

For 40 years, the Islamic Republic's Revolutionary Guard Corps has actively engaged in terrorism and created, supported and directed other terrorist groups.

The RGC masquerades as a legitimate military organization, but none of us should be fooled regularly violates the laws of armed conflict.

It plans.

Organizing executes terror campaigns all around the world.

The IRGC is also highly influential in Iranian life.

The U.

S government says it controls upto half of Iran's economy by allegedly stealing from the people in designating it a terrorist group.

The U.

S is pressuring Iran by telling international banks and businesses to stop any dealings with this part of Iran's government.

It means that there are significantly more measures the U.

S.

Contain against anybody considered to have given tangible, intangible assistance to the IRGC anywhere in the world.

They could be prosecuted on U.

S soil or have proceedings brought against them, so it enormously increases the toolbox for US prosecutors or defense officials, potentially if they choose to make moves against the IRGC.

But I have to say, because it's never happened before, we don't really quite know how practically will be applied.

The point is, though, it's the very hard talk we're hearing from the Trump administration against Iran.

The U.

S says it's been preparing to do this for months, and Iran retaliated yesterday by declaring the United States a state sponsor of terrorism.

The Middle Eastern country says it considers American troops operating in the region to be terrorist groups and that the U.

S government would be responsible for what Iran called the dangerous consequences.

This is all, according to Iran's government controlled news agency.

We're not sure how any of this will play out.

The U.

S.

Government says it's IRGC designation will take effect on Monday.

12th Trivia, Which of these companies currently sells a smartphone that works on America's butting five G network Samsung, Apple, Google or none of these?

At this moment, there's not a phone on the market that's fully compatible with five d.

Motorola offers a modification that makes one of its phones five g compatible, and Samsung plans to release a new five G phone this summer.

How big is the network they have to run on?

Well, it's not.

Verizon has five G available in several U.

S cities and A T and T, which owns CNN's parent company.

Warner Media says it's launched five g in more than a dozen places.

Industry analysts expect five g to be available in 92 American cities by the end of the year and as far as five.

G Ready.

Miss Goes, a group that represents the American wireless industry, says the U.

S and China are now tied for first place, and service is air also available in several South Korean cities.

Wire Tech enthusiasts so excited about this Why does it matter?

According to the Cellular Technology Industry Association, five G is gonna be a major factor in the U.

S.

Economy.

Changing education, robotics and medicine, self driving cars, smart cities, fully connected homes, robots, thistles.

The future.

It will be powered by five G.

The G stands for generation as a next generation wireless network, and it's going to be fast about 10 times faster than four g network today.

It takes about six minutes to download a three D movie and four g with five g will be 30 seconds, but five G is about more than just super fast.

Download.

Fewer drop cold, really about connecting the Internet of things.

Other sensors, thermostats, car robots, Crenna four g just doesn't have the bandwidth for all those devices, but five g will.

That's why it's a game changer.

Imagine self driving cars instantly communicating traffic lights and other cars, or a surgeon with our equipment and special gloves operating remotely on a patient thousands of miles away.

Five g will make that possible, but when 2020 is a working date for most of the wireless industry, four nationwide carriers are already testing the technology.

Shit makers are building processors and radios for five communication and network equipment.

Companies are building the back, but the future won't come cheap.

Five G signals are powerful, but they don't reach us far.

Making it work will require thousands and even millions of any cell phone towers pretty much everywhere.

You can imagine a lamppost outside of the building, maybe even in every room of your.

That's why rolling out five g to the entire United States could cost $300 billion.

Sometimes a single picture can tell the story.

And here's that story.

Most pythons founded Southern Florida are between six and 10 feet long.

This female was more than 17 feet long.

She weighed £140 and she was pregnant with 73 developing eggs.

Pythons are an invasive species in the region.

They begin showing up in Everglades National Park in the 19 eighties, probably from pet owners who didn't want them anymore.

They were willing to let Python's big bygones.

But with so many snakes alive, they threatened to change the region's ecological history when that big would make some folks jump out of their skin, while others would want to buy, fold it into a wallet or try it on for shoe size.

Whether you'd want her comes strictly gone or use leather alone.

Make that big a truly popped on it.