text:  Over a dozen Democratic lawmakers and governors have publicly backed Biden, including Governors Gretchen Whitmer of Michigan and Gavin Newsom of California, two rising stars in the party. Biden, for his part, has been busy trying to prove the critics wrong, with campaign stops across the swing state of Pennsylvania over the weekend. Barbara Sprint and Peer News, Washington. NATO is gearing up to mark its 75th birthday with a summit this week in Washington.