U.S. troops are sharing command stations and vehicles with civilian immigration authorities at the southern U.S. border under an emergency declaration from President Donald Trump.

Agents are arresting immigrants in cities such as Los Angeles and New York. Their expanding reach has sparked concern in law enforcement and immigrant communities.

Southern Arizona residents report Trump's border policies reduced illegal crossings and created a more positive atmosphere, with many praising the president's work.

The Trump administration slapped federal charges on two illegal migrants accused of shooting an off-duty border officer in the face

US President Donald Trump on Saturday called upon Cambodia and Thailand to put an end to the ongoing deadly border conflict, threatening them that America would not make any trade deal with them if they did not announce a ceasefire.

ABC News correspondent Martha Raddatz fact-checked LA Mayor Karen Bass on Trump's immigration policies as border crossings hit record lows under the new administration.