Rep. Don Young (R-Alaska) has endorsed Rep. Mazie Hirono (D-Hawaii) in her Senate bid, a surprising move since the seat could be in play for Republicans this fall. Young praises Hirono for working across the aisle in the lighthearted Web ad, in which he repeatedly jokes about criticizing House Minority Leader Nancy Pelosi (D-Calif.) before hugging Hirono at the end. "While Mazie and I don't see eye to eye on everything, we've done something too many people in Washington refuse to cross the aisle and do: We've worked together," Young said in the ad, and praises Hirono for working with...