It has long been largely true, but it's undeniable now that most prominent (and less prominent) Republicans and conservatives are bad faith operators to the point where almost nothing they say is true, or at least the truth of what they say is of no concern to them.
A pointless plea, but as with the last guy, the specific lies mostly aren't the issue, it's that they are liars. As I've written, the "liar" is such a fixture of DC that it is culturally taboo to reject them, but...