If Trump fulfills his campaign promises on immigration, he could disrupt a fragile equilibrium at the southern border and hurt the economy.

WASHINGTON - Newly sworn-in U.S. President Donald Trump said on Monday that he would declare illegal immigration a national emergency, send troops to the U.S.-Mexico border, and reinstate his "remain in Mexico" policy as part of a sweeping immigration crackdown.

WASHINGTON − President-elect Donald Trump on Monday is expected to declare a national border emergency and order the U.S. armed forces to "repel forms of invasion" at the U.S.-Mexico border, including illegal migration and drug trafficking,

By Ted Hesson and Alexandra Ulmer WASHINGTON/PIEDRAS NEGRAS, Mexico (Reuters) -Newly sworn-in U.S. President Donald Trump said on Monday he will declare illegal immigration at the U.S.-Mexico border a national emergency,

Donald Trump announced the declaration of a state of emergency at the border with Mexico and the deployment of troops there. These actions aim to halt illegal border crossings immediately. - All illegal border crossings will result in detention and we will begin the process of deporting millions of illegal immigrants back to where they came from