National Republican Congressional Committee Chairman Greg Walden (Ore.) on Tuesday dismissed talk about impeachment as a "fundraising scam" driven by the White House and the House Democratic campaign arm.

Echoing Speaker John A. Boehner's comments earlier in the day, Walden told reporters Democrats want to distract from President Obama's record and poor approval ratings.

"They want to promote this to fire up their base and change the topic. And they are are pretty successful at raising money off of it," said Walden.

Walden added that it's clear that "impeachment is not on the table" and GOP leaders aren't the ones talking about it. But he defended the House GOP's move to sue Obama over his changes to the federal health-care law, even as Democrats contend the strategy has backfired.

"The American people, especially independent voters, in the data we see, believe this administration has overreached time and again and they are clamoring for somebody to push back in a responsible way to get the administration to start following the law," Walden said.

DCCC Chairman Steve Israel (N.Y.) said that his committee has raised $7.6 million online since House Republicans said they planned to sue Obama, including $1 million on Monday alone.​

Walden would not say how much the NRCC has raised off the lawsuit.

While GOP leaders have made clear they do not favor impeaching Obama, some conservatives have argued for it. Former Alaska governor Sarah Palin (R) has said she wants Obama impeached. Rep. Steve Scalise (R-La.), the third-ranking House Republican, wouldn't rule out the possibility in a weekend television interview.

In an apparent effort to inject some doubt into GOP talking points on impeachment, White House senior adviser Dan Pfeiffer tweeted a reminder that Boehner said he had no interest in shutting the government down last year. It happened in the fall.

"The tweet they should be putting out is how they're going to support our effort to get control of our border," responded Walden.