The first lady, her mother, her two kids, plus numerous White House aides and security personnel are going to tour China this month, but White House officials are refusing to say how much the taxpayers will pay for the trip. However, they did say it would be a thrill for everyone on the trip, including for Michelle Obama’s top aide, Tina Tchen. “It is a real honor and privilege, and I think we are all, here in the first lady’s office, quite excited about the upcoming trip,” said Tchen, just after she declared that “my parents emigrated from China in...