Secretaries of state and election officials are meeting in Washington on the brink of a significant test of the nation's elections expected in the coming presidential campaign.

It's one week until the Iowa caucuses. The top five candidates in Iowa were all there Sunday — including the three senators squeezing in campaigning amid President Trump's impeachment trial.

President Trump meets with Israel's prime minister Monday. Then Wednesday he signs a much-anticipated trade deal. This week he also has two campaign rallies.

House impeachment managers press the Senate to call the former national security adviser to testify, after a New York Times report said Trump tied Ukraine aid to investigation of his political rivals.

Democratic presidential hopefuls are in home stretch of the Iowa caucuses and the top candidates have been campaigning there on Sunday.

The senator from Michigan responds to opening statements on Saturday from the president's legal defense team.