US President Donald Trump said on Thursday he was renaming Lake Ontario to be known as “Lake America” in the United States, as he exacerbates his trade war with Canada.The Republican president signed an executive order that updated the lake’s name for the US geographic naming service. Trump cannot force Canada to follow his preferred naming convention, however.The move is reminiscent of his move last year to rename the Gulf of Mexico as the “Gulf of America’.”Trump, who signed the order as he was sitting at the Resolute Desk in the Oval Office, had a large sign behind him propped on a stand with a map of the Great Lakes. Over Lake Ontario, in big red letters, the map read “Lake America”.On the other wide of the president was another map with the words, “MAKING THE GREAT LAKES EVEN GREATER”.US President Donald Trump holds up a signed executive order in the Oval Office on Thursday. Photo: APTrump told reporters that Canada is “the worst” to deal with on trade. “They feel entitled, and we can’t have that,” he said.