Former Pink Floyd frontman Roger Waters has reportedly suffered a large financial setback for his upcoming North American tour over his anti-Israel views.

American Express has declined to spend up to $4 million to sponsor Waters’ 2017 US + Them North American tour, the New York Post reported.

“Roger is putting on a huge show,” a source at American Express told the Post. “The company was asked to sponsor his tour for $4 million, but pulled out because it did not want to be part of his anti-Israel rhetoric.”

Waters has been one of the most vocal figures behind the anti-Israel Boycott, Divestment and Sanctions (BDS) movement. He’s often on the forefront in pressuring other musicians and artists to boycott performing in Israel due to its policies with the Palestinians.