Key questions for Trump’s Senate impeachment trial

In this Jan. 6 file photo, President Donald Trump arrives to speak at a rally in Washington. Arguments begin Tuesday in the impeachment trial of Donald Trump on allegations that he incited the violent mob that stormed the U.S. Capitol on Jan. 6. (AP Photo/Jacquelyn Martin, File)

WASHINGTON — Arguments begin Tuesday in the impeachment trial of Donald Trump on allegations that he incited the violent mob that stormed the U.S. Capitol on Jan. 6.