President Donald Trump caught everyone off guard by suddenly firing Homeland Security Secretary Kristi Noem — but being out of a job could just be the start of her problems.That's because, according to at least some observers, the thing that appears to have prompted Trump to fire her may be a federal crime.According to the New York Post, Trump said that Noem lied to Congress when she claimed during an intense hearing she had the president's personal sign-off for a $220 million ad campaign for th...