“After Manchin agreed with Senate Majority Leader Chuck Schumer on the party-line tax, health care and energy bill, the West Virginia Democrat found himself bargaining with fellow moderate Sen. Kyrsten Sinema. Both hard-nosed negotiators, the Arizona Democrat’s business-friendly tax-approach clashed sharply with Manchin’s more progressive positions on taxes.
Manchin sought to target the wealthy and ended up agreeing with Schumer to target the so-called carried interest loophole that allows some people to pay lower tax rates on investment income. He also signed off on a corporate minimum tax package that most Democrats believed Sinema supported.
Ultimately, Sinema took a scalpel to the corporate minimum tax and scuttled any changes to carried interest, which Manchin called particularly “painful.” Triangulating between them through all of it: Schumer, whose job was harmonizing the views of the very public Manchin with an often-silent Sinema.”
https://www.politico.com/news/2022/08/07/sinema-manchin-anatomy-senate-deal-00050259