The Republican chairman of the Senate Health Committee says that President Trump may have been the only person who didn't understand the complexity of healthcare policy.

"As the president said, nobody knew how complicated this was," Sen. Lamar Alexander Andrew (Lamar) Lamar AlexanderChamber of Commerce endorses McSally for reelection Trump health officials grilled over reports of politics in COVID-19 response Now is the time to renew our focus on students and their futures MORE (R-Tenn.) told The New York Times' "The New Washington" podcast.

"Well, he may have been the only person who didn't know that, because it's very complicated. It involves nearly 300 million Americans, many different points of view."

In the wake of the failure of the Senate's so-called "skinny" ObamaCare repeal bill last week, Alexander and his Democratic counterpart on the health committee, Sen. Patty Murray Patricia (Patty) Lynn MurrayTrump health officials grilled over reports of politics in COVID-19 response CDC director pushes back on Caputo claim of 'resistance unit' at agency The Hill's Morning Report - Sponsored by The Air Line Pilots Association - Pence lauds Harris as 'experienced debater'; Trump, Biden diverge over debate prep MORE (Wash.), said they will hold hearings in September on how to stabilize the law's individual insurance market.

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The hearings' announcement marks a decidedly bipartisan approach to healthcare reform following months of GOP efforts to dismantle the Affordable Care Act (ACA).

As a presidential candidate, Trump vowed to swiftly repeal and replace President Barack Obama Barack Hussein ObamaObama calls on Senate not to fill Ginsburg's vacancy until after election Senate Republicans face tough decision on replacing Ginsburg Cruz: Trump should nominate a Supreme Court justice next week MORE's signature healthcare law.

But soon after taking office in January, Trump conceded that reforming the nation's healthcare system was far more complicated than he had imagined.

"Now, I have to tell you, it's an unbelievably complex subject," he said in February. "Nobody knew healthcare could be so complicated."

Since then, congressional Republicans have struggled to reach an agreement on how to best repeal the ACA.

The House passed its version of healthcare reform in May after an initial failure weeks earlier. But that measure lacked support among Senate Republicans, who have so far failed to reach consensus on a healthcare plan.