World News Roundup

Parts of the U.S. are facing cold temperatures this weekend. President Biden has reacted to a series of bomb threats and other incidents targeting his administration and several Democratic lawmakers. Canada is considering tariffs to retaliate if President-elect Trump imposes tariffs on Canada, Mexico, and China. CBS News Correspondent Jennifer Keiper with tonight's World News Roundup. Learn more about your ad choices. Visit megaphone.fm/adchoices