Sorry, let me expand on that a little.
Some around here think that those who say that Iraq was a stupid idea, poorly done, for too long a time, are traitors.
Some around here think that the only good Muslim is a dead one.
It is reasonable to suppose that those people would think that a US congressman taking a bribe from a Syrian would commit treason.
I certainly would not jump to that conclusion, depending on what exactly the quid pro quo was. My impression is that it was just a case of bribing to get favorable business legislation passed. But that's really for the feds to investigate and decide.