A contributor to Fox News revealed that he is on the U.S. government’s terrorist watch list. TVNewser reports that Fox contributor Stephen Hayes tweeted about recently discovering that he’s on the list.

“Explains why I have been subject to extra screening each of my recent trips,” Hayes wrote on Twitter.

Hayes hasn’t been able to find out why he’s on the list, Mediaite reports, but he wrote that he suspects he ended up on the list becaues of a “one-way flight to Turkey in late July (return flight was Athens).”

Over the past five years, more than 1.5 million people have been aded to the terrorist watch list, according to the Associated Press.