President Barack Obama is almost as tight-lipped about the lavish dinners he headlines. His handlers allow reporters to witness boilerplate opening remarks before herding them to the curb. Yet Obama is so determined to make sure there’s no record of his less formal comments that campaign workers confiscate guests’ phones and put them in plastic bags before some fundraisers, including one held on May 14 at the New York home of Blackstone Group LP (BX) President Tony James.