European mass migration crisis

First lady Melania Trump speaks on the second day of the Republican National Convention from the Rose Garden of the White House, Tuesday, Aug. 25, 2020, in Washington. (AP Photo/Evan Vucci)

In this grab taken from video migrants who were directed off a railroad by police blocking the path gather, in Bosanska Otoka, Bosnia, Monday, Aug. 24, 2020. Bosnia’s quarreling ethnic leaders have put migrants amassed in the country while seeking entry to Europe at the center of a a political tug-of-war. Local authorities in the northwestern Krajina region have set up roadblocks to prevent migrants from entering the area under their jurisdiction, leaving hundreds trapped on the side of a road without access to food or shelter. (AP)

FILE - In this Aug. 17, 2020 file photo, a medical worker wearing protective gear collects a swab from a person sitting inside a car during Covid-19 tests at the the Santa Maria della Pieta' health center in Rome. Vacationers returning from Mediterranean Sea resorts abroad as well as on the Italian island of Sardinia have accounted for upward leaps in daily new case numbers. On Saturday, Italy registered 1,071 new cases, the highest daily number since mid-May, and only weeks after the nation had seen the number of day-to-day new infections plunge to about 200. (AP Photo/Riccardo De Luca)

FILE - In this Aug. 17, 2020 file photo, a medical worker wearing protective gear collects a swab from a person sitting inside a car during Covid-19 tests at the the Santa Maria della Pieta' health center in Rome. Vacationers returning from Mediterranean Sea resorts abroad as well as on the Italian island of Sardinia have accounted for upward leaps in daily new case numbers. On Saturday, Italy registered 1,071 new cases, the highest daily number since mid-May, and only weeks after the nation had seen the number of day-to-day new infections plunge to about 200. (AP Photo/Riccardo De Luca)

Dr. Idriss Abdallah of the health activism group called Banlieues Sante, left, nurse Caroline Andoum, center, talk inside a tent in Bondy, north of Paris, Thursday Aug. 6, 2020. Festering beneath France's promise of guaranteed health care for all lie deep disparities across economic and racial lines – differences laid painfully bare by the COVID-19 crisis. (AP Photo/Arno Pedram)

FILE - In this April1 14, 2018, file photo, then-Marine Lt. Gen. Kenneth "Frank" McKenzie speaks during a media availability at the Pentagon in Washington. The top U.S. commander for the Middle East warned Wednesday that elements of the Islamic State group are working to rebuild in western Syria, where the U.S. has little visibility or presence. In the region west of the Euphrates River where the Syrian regime is in control “conditions are as bad or worse” than what they were leading up to the rise of IS, said Gen. Frank McKenzie. "We should all be concerned about that.” (AP Photo/Alex Brandon, File)