President Barack Obama and members of his administration are holding a day-long mental health conference Monday at the White House--and they have asked Hollywood to help lend some star power. Actors Bradley Cooper and Glenn Close are among those invited to participate in the meeting, which features a panel on negative attitudes toward mental illness moderated by Health and Human Services Secretary Sebelius, a panel on mental health outreach moderated by Education Secretary Arne Duncan, and opening remarks from the president and closing remarks from Vice President Joe Biden, Cooper and Veterans Affairs Secretary Eric Shinseki. Close in 2009 co-founded...