Imposing a temporary travel ban on citizens from seven Muslim-majority countries, President Donald Trump said the move would help protect the United States from terrorism. But fewer than one-third of Americans believe the move makes them "more safe," according to a Reuters/Ipsos opinion poll released Tuesday.

The poll, taken on Monday and Tuesday, found roughly half of Americans backed the ban, which also suspends the admission of all refugees for 120 days. There were sharp divisions along party lines.

Trump has pushed back against critics who say the travel ban targets Muslims. He says "extreme vetting" is necessary to protect the country.