Eric Trump on Monday falsely said his father, Donald Trump, saved the word “Christmas,” by declaring, “we’re gonna call it a Christmas tree because we celebrate Christmas as a nation.” The ex-president’s son falsely alleged President Barack Obama “weaponized the IRS to go after um, you know, Christian organizations…absolutely viciously,” before setting his sights on an old right-wing canard that liberals hate Christmas. “You know, you had a cognizant effort to get rid of the word ‘Christmas,’” Eric Trump told Newsmax. “I mean, they were calling it a holiday tree, uh, during the Obama administr…