President Donald Trump took his lying to Las Vegas on Thursday, where he continued misrepresenting a new tax law benefiting senior citizens and workers who collect tips or work overtime.

“You have no tax on Social Security for our seniors, lot of seniors out there,” he told his audience, falsely. “And you have no tax on overtime. You know this state covers them all. You have the seniors. You have the overtime, but you have no tax on overtime, you have no tax on tips, and you have no tax, think of it, on Social Security.”

Trump also claimed that the average tax refund this year is “over $4,000.” According to U.S. Treasury figures, it is actually $3,521, which is only $350 more than last year.

Trump then repeated a previous lie that a DoorDash delivery driver who brought him a McDonald’s meal at the White House on Monday saved $11,000 from the new deduction on tipped income – a mathematically impossible figure.

Trump has described the deductions as “no tax on tips,” “no tax on overtime” and “no tax on Social Security” – language that has been adopted and repeated by his White House, his administration and his Republican allies.