The Inflation Reduction Act was a surprise to a lot of people on Capitol Hill and across the country, according to Sen. Joe Manchin.

The West Virginia senator told CNN's Jake Tapper that he didn't think it would come to fruition because people weren't brought into it.

Manchin was criticized by his Democratic colleagues and advocates for being a key holdout on the bill for more than a year.

He told Tapper that he didn't want to build any anticipation and then have it fall.

The President was aware of a few officials. He said Biden approved the act.

The bill, which includes prescription drug negotiations, climate change solutions, and tax reforms, would need to be passed by at least half of the Senate. Sinema may be holding out on the legislation.

Manchin wouldn't say when he spoke with Sinema. Manchin said that they work very close together and that she has a lot in the legislation.

Sinema has not commented on the plan. Manchin hoped that she would be positive about the situation. She'll decide. I'm respectful of that.

Insider didn't get a response from Sinema and Manchin.