United States President Donald Trump on Saturday spoke against immigration at a rally in Florida, referring to an incident in Sweden."You look at what's happening last night in Sweden. Sweden, who would believe this. Sweden. They took in large numbers. They're having problems like they never thought possible," Trump said. It was unclear what he was referring to when he said "last night in Sweden"."You look at what's happening in Brussels. You look at what's happening all over the world. Take a look at Nice. Take a look at Paris," Trump said, referring to terror attacks in those cities.Trump's comments came as he made his argument and announced that he is issuing a new executive order banning citizens of certain countries traveling to the United States."We've allowed thousands and thousands of people into our country and there was no way to vet those people. There was no documentation. There was no nothing. So we're going to keep our country safe," Trump said.Trump held a campaign rally in an airport hangar in Melbourne, just up the coast from his Mar-a-Lago resort where he will spend the weekend.The Sweden comments prompted many Swedes to take to the social media to discuss "last night in Sweden", as no terror incident was reported in the country.