When Kal Penn visited Marquette Saturday, he wasn’t just stopping by on his way to White Castle. Best known for his parts in the series “House M.D.” and the “Harold and Kumar” movies, Penn also stars for the White House under another role: associate director of public engagement. He spoke before a crowd of more than 100 in the Alumni Memorial Union. “I got a phone call in 2008 asking if I could serve in a much bigger way in youth outreach,” Penn said. “I am honored to serve my country. I’m happy to do this. I thought it was...