Rep. Thomas Massie, R-Ky., says he believes a majority of the public doubts the official U.S. government contention that Syrian President Bashar Assad used chemical gas against the final rebel-held town near Damascus. “Anybody who has tried to explain to me why Assad would do this sounds like a conspiracy theorist,” said Massie, a libertarian Republican from Kentucky. “It requires really contorted thinking to think Assad did this. You have to come up with very complicated reasons.” “I cannot think of a reason he would,” Massie said.