Not much divided Ben Cardin and Chris Van Hollen. Then came Israel’s Netanyahu.

U.S. Sen. Ben Cardin stood in the House chamber on Wednesday afternoon, waiting for Benjamin Netanyahu. When the Israeli prime minister entered to minutes of thunderous applause, there were dozens of seats left empty in protest. Perhaps none was more noticeable for Maryland than that of Cardin’s ally and fellow U.S. senator, Chris Van Hollen.