Sen. Jon Tester, D-Mont., said Friday that he won't keep campaign donations he received last year that have now been tied to a disgraced Democratic fundraiser if the donations are found to be improper. "If a donation to Senator Tester is shown to have been made illegally, he would obviously return it or donate it to charity," said Matt McKenna, a Tester spokesman. Tester received $3,750 last year from people linked to Norman Hsu, a New York clothing executive who helped raise more than $1 million for Democratic candidates in the past four years. Tester received no money from Hsu...