On the whole, they've been more than happy to talk about how "troubled" they are by President Trump's behavior, but ask them to do anything about said bad and terrifying behavior, and suddenly the Mitch McConnells and Paul Ryans of the world are nowhere to be found. Why?
Trump also implicitly attacked Arizona's junior senator, Jeff Flake, who has been one of the party's most vocal Trump critics.
It's because a healthy, robust, competitive primary challenge to this president in 2020 might just prevent the Republican Party from splitting in two - prevent it from diluting constituencies into three main political parties as we saw most recently in 1992 with the emergence of Ross Perot and his Reform Party.
"Trump has been known to see a senator on TV or think about an issue and immediately ask White House assistant Madeleine Westerhout to dial the senator", the report reads. At his campaign rally in Phoenix last night, President Trump repeatedly attacked Congress.
"Any time he steps up and tries to equate two groups or two conversations, I think that muddies the water", Lankford said of Trump.
Trump is very unpopular, and has major failures on both domestic and foreign policy, with no major legislative accomplishments under his belt.
Sen. Corker, you'll recall, questioned the president's stability and competence last week after Trump sided with neo-Nazis who killed a young woman protesting white supremacists in Charlottesville. Trump called Flake "toxic".
It's also clear that frustrations are rising over the August break because of the president's ambiguous response to the racist violence in Charlottesville, Va., as well as his continued inability to focus his message to promote the GOP plan to overhaul the tax code. There should be no place for hatred, bigotry, and racism in this country and he should have said that very clearly.
The relationship between President Trump and Senator Mitch McConnell, the majority leader, has disintegrated to the point that they have not spoken to each other in weeks, and Mr. McConnell has privately expressed uncertainty that Mr. Trump will be able to salvage his administration after a series of summer crises. Why would a Republican president attack one of his party's most vulnerable incumbents at time when the GOP holds such a narrow majority that it can not pass legislation to repeal and replace "Obamacare" - or much of anything else?
House Republicans, by comparison, have generally been more reticent about criticizing or pushing back against the president.
NBC correspondent Hallie Jackson traveled to Bangor on Monday morning to host a live interview with Collins on MSNBC.
Meantime, Trump's slightly masked remarks about Flake and McCain represented just one of the times he openly defied his own senior aides during Tuesday's address. Gerrymandering kills representative democracy because it isolates the officials from the people that they were elected to represent. And if we don't, the Republicans will never get anything passed.