At least 51 migrants have died after being trapped inside a sweltering tractor-trailer truck found abandoned in Texas, authorities said on Tuesday, as two Mexican nationals tied to the unprecedented smuggling tragedy were charged in U.S. federal court.

The US Supreme Court hands President Donald Trump a victory by letting his administration redirect $2.5 billion in money approved by Congress for the Pentagon to help build his promised wall along the US-Mexico border even though lawmakers refused to provide funding.

US authorities have said they had placed 5,200 detained migrants into quarantine, mainly over exposure to mumps, linking a surge in cases to a recent outbreak of the contagious disease in Central America.

US President Trump urges Congress to give him $5.7 billion this year to help build a wall on the border with Mexico, but stops short of declaring a national emergency that could have led to unilaterally funding the project.

US President Donald Trump vowed Tuesday he would not reopen the government until he gets $5 billion to fund his border wall, as the partial government shutdown dragged into a fourth day.

Hundreds of Central American migrants planning to seek asylum in the United States move toward the country's border with Mexico as US military reinforced security measures, laying barbed wire and erecting barricades.

White House spokeswoman Sarah Sanders says on Saturday that she had been asked to leave a Virginia restaurant the night before because she worked for US President Donald Trump.

At least 14 people are killed Saturday in three shooting incidents in the northern Mexican city of Juarez, notorious for its drug gang related violence.

Lilian Merida-Galicia and her 7-year-old daughter are apprehended after crossing the US-Mexico border in Arizona and separated by US officials in mid-May.

Melania Trump surprises the world by visiting child migrants on the US-Mexico border -- but it was her choice of clothing for the trip that stuns the internet: a jacket emblazoned with the words "I really don't care, do you?"

US President Donald Trump backs down and abandons his policy of separating immigrant children from their families on the US-Mexico border, after images of youngsters in cages sparked outrage at home and abroad.

Democratic lawmakers join protesters outside immigration detention facilities in New Jersey and Texas on Sunday for Father's Day demonstrations against the Trump administration's practice of separating children from their parents at the US-Mexico border.

Women and children crossing together illegally into the United States could be separated by US authorities under a proposal being considered by the Department of Homeland Security, three government officials say.