You have to be Christian to truly be ‘American’? Many people in the U.S. say so.

About one-third of all Americans think that you have to be a Christian to truly be an American — despite the history of religious pluralism that dates back to the nation’s very earliest days.

In a timely survey released Wednesday afternoon, just as the United States is debating the merits of suspending immigration from seven majority-Muslim countries, the Pew Research Center asked residents of numerous nations what it takes to truly belong in their countries. Americans were far more likely than residents of other countries included in the survey to say that religion was key to sharing in the national identity.

Thirty-two percent of Americans said one should be Christian to really be American, compared to just 13 percent of Australians, 15 percent of Canadians and 15 percent of Europeans who felt the same way about belonging in their homelands.