Republican Congressman Tom Kean Jr has not been seen in Washington or his New Jersey hometown for months, but he is expected to easily win his party's backing for re-election on Tuesday, after a recent endorsement from President Donald Trump. "Tom Kean has my Complete and Total Endorsement for Re-Election," Trump wrote on social media, adding, "HE WILL NEVER LET YOU DOWN!" Kean is running unopposed so has not needed to campaign with voters. But US media report he also has not been in Congress, and has missed more than 100 votes. He was last seen on 5 March. His...