Alejandro Mayorkas

The chief executives of OpenAI, Microsoft and Google are among the high-profile members of a new federal board created to advise the U.S. government on the "safe and secure" development of artificial intelligence.

Republicans impeached U.S. President Joe Biden's immigration chief on Tuesday, the culmination of months of attacks on the Democratic administration as they seek to make border security a key issue in November's election.

House Republicans released two impeachment charges against Alejandro Mayorkas on Sunday, accusing the Department of Homeland Security Secretary of high crimes and misdemeanors for his implementation of U.S. immigration policy.

Thousands of people remained in Mexico hoping to enter the United States, as it was not yet clear how the stringent new rules for people crossing the border illegally would be enforced.

In the Mexican border city of Ciudad Juarez, some 200 migrants were blocked by US troops from accessing Gate 42, the entry point to El Paso, Texas, where hundreds crossed on Thursday.

The U.S. will take steps to more quickly move hundreds of migrant children and teens out of cramped detention facilities along the Southwest border, President Joe Biden said. He was pushing back against suggestions that his administration's policies are responsible for the rising number of people seeking to enter the country.

The United States is facing the biggest surge of migrants at its southwestern border in 20 years, the homeland security secretary said on Tuesday as the Biden administration races to handle an influx of children trying to cross the U.S.-Mexico border alone.

Last week's attempted coup by strident supporters of President Donald Trump sullied America's image in the world, and it also drowned out other significant news regarding American foreign policy during the Biden administration.

President-elect Joe Biden on Nov. 23 announced a foreign policy and national security team crammed with veterans from the Barack Obama years, signaling an end to the upheaval under President Donald Trump and a return to traditional U.S. diplomacy.    

Top of the list was former State Department number two Antony Blinken, tapped for secretary of state.