All Presidents say things that turn out to not be true. Some examples are:
(1) Mission Accomplished
(2) We invaded because he has weapons of mass destruction.
(3) You can keep your doctor.
(4) I did not have sex with that woman.
But from Spicer, to Conway, to Flynn, to Trump himself, this administration tells one whopper (sorry, I should have said "alternative facts") after another. We have to believe our President, and the poll numbers suggest that most Americans don't believe this one.
Here's A Running List Of President Trump's Lies And Other Bull**** - BuzzFeed News
Toronto Star compiles list of almost 500 Trump lies during campaign.
Lyin' Donald: 101 Of Trump's Greatest Lies | Daily Wire
Republicans! Seriously! You can't just accept this. You can do better.