President Trump threatened a significant tariff hike on the European Union and Mexico, two of the largest U.S. trade partners, on Saturday. NBC News’ Yamiche Alcindor has more.

President Donald Trump posted letters to the leaders of Mexico and the European Union, saying they had not done enough to head off the new tariffs.

The U.S. has closed its southern border again to livestock imports, saying a flesh-eating parasite has moved further north in Mexico than previously reported.

U.S. President Trump is expected to sign a presidential declaration on Thursday, July 10, and millions of dollars are expected to be provided to help support Ruidoso after the devastating flash flood.

A small company in northern Mexico had faced steep competition from China in making straps, plugs, fasteners, grommets, zip ties and clamps. Now, U.S. tariffs have driven a spike in his business.

A new study shows that most Canadians view the United States as a "top threat," highlighting the increasingly strained relationship between the two countries. It has been on the rocks since President Donald Trump won re-election.

Shares of Geo Group GEO and CoreCivic CXW are popping on Monday following last week's Congressional approval of President Donald Trump's massive tax and spending bill, which vastly increases funds for the administration's aggressive immigration policy.

Trump delayed the "reciprocal tariffs" in April, vowing to strike roughly 90 trade deals in 90 days. So far, the White House says it has reached trade agreements with only the United Kingdom and Vietnam, as well as a preliminary accord with China.