U.S.-Mexico border

The immigration proclamation bars migrants who illegally cross the border from seeking asylum when the number of border crossings reaches a certain level. Some legal avenues of entry remain.

A president can deploy the military to a foreign country only if there is an “imminent attack” or if it is in the United States’ national interest. Only Congress has the power to declare war.

Gov. Ron DeSantis said he's sending over 1,100 National Guard soldiers and law enforcement officers to help secure the southern border.

Many are fleeing crime and poverty in Central America and rushing to the U.S.-Mexico border. Homeland Security Secretary Alejandro Mayorkas this week called the situation a "stressful challenge."

A growing crowd of Central American migrants in southern Mexico is resuming its advance toward the U.S. border on Sunday.