Campaigning in Iowa, Biden largely avoids impeachment politics

As the Senate begins U.S. President Donald Trump's impeachment trial on Capitol Hill, Democrat Joe Biden is 1,000 miles away in Iowa, trying to capitalize on the circumstances without allowing the proceedings to overshadow the closing case he's making ahead of the first 2020 votes. "The character of the nation is on the ballot," Biden told a few hundred potential caucus-goers Tuesday at Iowa State University. "We've never seen ... such an abuse of power by a president." Yet Biden mostly sidestep