Photo taken on Dec. 30, 2020 shows the U.S. Capitol building in the evening in Washington, D.C., the United States. As lots of Americans are heading home or traveling for holidays, public health experts are warning of another possible catastrophic COVID-19 surge that could hit the United States hard. (Xinhua/Liu Jie)

Photo taken on Dec. 30, 2020 shows the U.S. Capitol building in the evening in Washington, D.C., the United States. As lots of Americans are heading home or traveling for holidays, public health experts are warning of another possible catastrophic COVID-19 surge that could hit the United States hard. (Xinhua/Liu Jie)

Photo taken on Dec. 30, 2020 shows the U.S. Capitol building in the evening in Washington, D.C., the United States. As lots of Americans are heading home or traveling for holidays, public health experts are warning of another possible catastrophic COVID-19 surge that could hit the United States hard. (Xinhua/Liu Jie)