Scooter Libby, Grover and Samah Norquist, Kevin Madden and Robert Agostinelli mingled with other guests on the roof of the W Hotel at the National Review party to welcome new Washington editor Bob Costa

on Thursday night. Also spotted: Politico reporters such as Mike Allen and Jonathan Martin, and NRO stars including Jonah Goldberg and Rich Lowry, who was honored for his 15 years leading the conservative

outlet.