All Things Considered With Daniel Costello

Updated at 10:02 p.m. ET

Acting Homeland Security Secretary Kevin McAleenan is leaving his post, the latest casualty at the department responsible for protecting U.S. borders.

President Trump said in a tweet Friday night that McAleenan had done an "outstanding job" but that he wanted to "spend more time with family and go to the private sector."

Trump added that he would announce a new acting secretary next week.

Earlier this year, the State Department quietly rolled out new limits on one of President Trump's favorite targets: the diversity visa lottery.

The White House made ending the program one of the "pillars" of its immigration policy proposal last year. But those proposals went nowhere on Capitol Hill.

So the administration tried something different: It is restricting who can apply for the diversity visa, in a way that advocates say will make it much harder for low-income immigrants to apply.

In the industrial city of Dongguan, China, the effects of the trade war on the Chinese economy are measured in idled machinery and empty bar stools.

"One year ago, you probably couldn't even get through the crowd because it would be so busy. But right now, even the smallest vendors can't survive," says Song Guanghui, the owner of Crowdbar, a tricked-out food stall in an open-air market in Dongguan.