Domenico Montanaro

There is lots to watch this week, from a potentially make-or-break stretch on the tax overhaul President Trump so badly wants to social media network officials testifying about what they knew and when they knew it about Russian-linked ads that may have helped influence the 2016 presidential election.

For the first time, a majority of Republicans are in favor of legalizing marijuana, according to a Gallup poll out Wednesday.

Fifty-one percent of Republicans tell Gallup that, yes, marijuana should be legal, up from 42 percent last year.

Updated at 11:53 a.m. ET.

There is a political crackup happening in America.

There remain two major political parties in this country, but there are stark fissures within each. There seem to be roughly at least four stripes of politics today — the pragmatic left (think: Obama-Clinton, the left-of-center establishment Democrats), the pragmatic right (the Bush-McCain-Bob Corker Republican), the populist right (Trump's America) and the populist left (Bernie Sanders liberals).

Updated Monday, Oct. 23 at 6:08 p.m. ET

When backed into a corner, President Trump digs in and fights back.

It's what he's done as president, it's what he did as a candidate and it's what he did as a businessman.

Myeshia Johnson, the widow of Army Sgt. La David Johnson, one of the four U.S. soldiers killed in a military operation in Niger on Oct. 4, told ABC's Good Morning America that President Trump "made me cry even worse" when he called to offer condolences last week.

The phone call between the president and Johnson has been a source of controversy for a week now, since Rep. Frederica Wilson, D-Fla., who listened in on the call, revealed details of the conversation.

You might say George W. Bush wants to make America great again.

In remarks Thursday, he criticized the kind of politics, sentiment and populism that led to President Trump's rise and election — though he never named Trump explicitly.

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Updated at 2:20 p.m. ET

Not much of significance has gotten through this Congress, despite the House, Senate and White House all being controlled by the same party — Republicans.

President Trump says, don't blame him.

"We're not getting the job done. And I'm not going to blame myself, I'll be honest," Trump said during short remarks in a Cabinet meeting.

He then shifted away from "we" to "they."

"They're not getting the job done," the president said of Congress.

Back in March, after the first Republican legislative failure to repeal and replace the Affordable Care Act, also known as Obamacare, during the Trump presidency, President Trump went before cameras in the Oval Office and revealed some of his thinking when it comes to the politics of health care.

"I've been saying for the last year and a half that the best thing we can do politically speaking is let Obamacare explode," Trump said. "It is exploding right now."

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We now do know that a special device was used to maximize the carnage in Las Vegas on Sunday night.

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