Dunno about the DUmp, but reddit and twitter are all aflutter claiming he is there partying on taxpayer money.
Well:
1. By Federal law, he is one of a number of Federal officials who can only travel by US military transport;
2. Patel was in Milan to oversee the FBI's security operations. If his approval was needed for some action, he was right there, not thousands of miles and 7 time zones away. The victorious US men's hockey team
invited Patel into their locker room, he was not there solely at his own initiative.