Sen. Lindsey Graham on Thursday lashed out at the House impeachment inquiry, dismissing testimony from the acting US ambassador to Ukraine as “hearsay” and introducing a resolution condemning the House impeachment inquiry.

“Did he talk to the president? Oh. That’s hearsay,” the Republican and President Trump loyalist said about testimony earlier this week from William Taylor.

Taylor, a 50-year public servant and decorated US Army officer who served in Vietnam, told lawmakers that other administration officials told him that Trump had demanded that Ukraine open investigations into Joe and Hunter Biden and the 2016 election before he’d authorize the release of military aid and invite President Volodymyr Zelensky to the White House.

“I’ve got nothing against Bill Taylor. It’s the process. You’re asking me do I believe something based on a statement that hasn’t been tested. Until we get the full picture, I think — I said this yesterday, I think it’s hard to draw any conclusions,” Graham said of Taylor’s 15-page opening statement.

“I read the leaked testimony which wasn’t supposed to be out there yet. From what I could tell, a lot of the interactions and statements that he made were based on secondhand information. And I think that’s — those are obviously points that can be disputed,” Graham, one of the president’s staunchest allies, continued.

Graham on Thursday was also introducing a resolution condemning the Democrat-controlled House for pursuing a “closed door, illegitimate impeachment inquiry.”

Graham said the Senate’s top Republican, Mitch McConnell, was a co-sponsor.

The nonbinding resolution gives Senate Republicans a chance to show support for Trump at a moment when the president is urging his GOP allies to get tougher and fight harder for him as the House impeachment probe gathers momentum.

But many Senate Republicans are taking a wait-and-see approach amid the impeachment inquiry.

Rather than commenting on the substance of the probe, they are united in complaining that the House is taking depositions from witnesses behind closed doors — a practice commonly employed by the GOP when they controlled the chamber.

Asked if Taylor’s testimony was a rough day for the White House and Republicans, No. 2 Senate GOP leader John Thune of South Dakota said, “Probably one of many.”

“Obviously, we have a lot of incoming right now. That’s the nature of the beast,” Thune said.

Republicans drew more attention to the secrecy Wednesday when around two dozen GOP lawmakers not directly involved in the investigation barged into a deposition of a Defense Department official.

The stunt  — which Graham described as “nuts” — delayed the day’s interview by five hours.

Much of the House inquiry has unfolded behind the closed doors of secure offices in the Capitol Visitors Center.

Democrats said the closed-door meetings were necessary so that future witnesses couldn’t coordinate their stories.

Alongside the Democrats, GOP members of the three House committees heading the investigation have been in the room as diplomats and other officials have testified.

Democrats have said they expect to hold public hearings later in the process.

Taylor’s explosive testimony contradicted Trump’s and other administration officials’ repeated denials that there was a quid pro quo with Ukraine, and that the president used the nearly $400 million in military aid as leverage for personal political gain.

Taylor detailed conversations he had with other US diplomats who were trying to obtain what one called the “deliverable” of Ukrainian help investigating Trump’s political rivals, according to the statement.

The assistance was finally released on Sept. 11 after bipartisan criticism of the president’s decision to withhold it, as Ukraine continued fighting Russian-backed rebels in the country’s east.