Many in the pop music community are weighing in with protests against President Donald Trump’s executive order Friday that suspends refugee arrivals and bans entry to the U.S. from seven Muslim-majority countries. “America is a nation of immigrants, and we find this anti-democratic and fundamentally un-American,” Bruce Springsteen told an audience in Adelaide, Australia, on Monday before he and the E Street Band performed what he introduced as “an immigrant song,” “American Land.”