Muhammad Ali Jr. was reportedly detained at the Ft. Lauderdale airport. According to a family friend and attorney, Ali and his mother were detained for their "Arabic sounding names" and Mr. Ali was asked twice during his 2 hour detainment if he was Muslim.
Interestingly, Mr. Ali's mother was released when she showed officials a photograph of her with Muhammad Ali, but her son had no picture proving his identity, though he did have a U.S. passport. They were traveling from Jamaica.
This was reported on several news sites, but I have no idea if it's fake news, or not.