I'm reading today that people are shocked, just shocked, that Donald Trump would seemingly allow Paul Ryan to privatize Medicare when Trump explicitly promised his supporters that he would protect their entitlements during the campaign. Surely, say the shocked, people will now see through the man's lies.
As far as "you said one thing and did another," this is a pretty open and shut case, right?
Prepare to be massively frustrated. Trump, or people around Trump, will simply say that Paul Ryan's plan to privatize Medicare is the best and only way to protect it. The media will report such claims as a legitimate point of view and the conversation will quickly and forever shift away from whether or not this was a lie and to, "how are we going to fix this mess, Paul Ryan is an intellectual!"
I'm sure this will happen in other areas, too. Trump will never admit to having lied to his supporters. He will just re-label things. Hiring 10,000 border patrol agents will become a "human wall." Any tweak or concession made to an existing international agreement will be packaged as wholesale change.
He's never going to "break" his promises to his people. He's going to fulfill them in awesomely branded ways!