More than 220 million people across the United States are facing dangerous cold that will also open the door for a potentially historic and crippling winter storm that could deliver snow as far south as Florida and the Gulf of Mexico.

The national emergency declaration will allow the Trump administration to deploy armed forces and National Guard members to the border. Trump said troops will "repel the disastrous invasion of our country." It's unclear how many troops will be sent to the border.

President Donald Trump signed a string of immigration-related executive orders from the Oval Office Monday, including the declaration of a national emergency at the southern U.S. border.

Invoking presidential emergency powers gives the president the ability to go around Congress and unlock federal funding to crack down at the border.

Heavy snow and ice led to thousands of flight cancellations across the country as the ripple effects of the storm trickled through the airline networks. Airlines cancelled nearly half of all flights into and out of Atlanta on Friday, according to airline tracking company FlightAware. Atlanta is home to the world’s busiest commercial airport.

Areas from Texas to the Carolinas will experience their first major winter storm in years from Thursday into the weekend — with snow stretching as far north as New England, and into areas pummeled by a storm earlier this week.

Parts of Texas, Oklahoma and Arkansas began to see snowfall on Thursday as Southern states stretching to the Carolinas brace for the storm to reach them on Friday.

Trump will re-implement his “Remain in Mexico” policy, which requires asylum seekers to wait on the southern side of the Mexican-American border

Another massive winter storm is forecast to pummel the southern and eastern U.S., with impacts from Texas to the Carolinas.

The rule of law is not self-executing,” said US Attorney Zachary Myers, who was appointed by President Joe Biden in 2021.

Donald Trump became the 47th president of the United States in Washington, D.C., on Monday, and right away announced a series of changes, including declaring national emergencies at the southern border and energy.

A developing winter storm system is threatening many southern states with a mix of snow, sleet and rain late Wednesday night and into Friday, the National Weather Service says.