LogFAQs > #967188017

Republicans have stated their rationale for voting against the bill: it's not about DEI, but about inflation fears.
https://justthenews.com/government/congress/house-gop-leadership-tells-members-vote-no-chips-act (this site seems like hot garbage, but I've got no reason to doubt the Scalise quote)

House Republican leaders are urging their members to vote against a bipartisan Senate measure that would give tens of billions of dollars to the U.S. makers of semi-conductor computer chips, which they calling a "corporate welfare bill."
...
"At a time when Democrats reckless spending policies have led to historically high inflation, the government should not be injecting hundreds of billions of dollars in additional subsidies into the economy," House Minority Whip Steve Scalise said in in the letter Wednesday night to conference members.

(Also it's because they're mad Manchin waited until after it passed the Senate to support the reconciliation bill)
https://fortune.com/2022/07/28/chips-bill-act-2022-senate-house-vote-results-joe-manchin/

Senate Republicans had tied the fate of the Chips Act to the spending package, which could only pass through the Senates reconciliation process with just Democratic votes.On July 1, McConnell said there would be no Republican votes for any Senate effort towards chips or other innovation-related measures so long as Democrats are pursuing a partisan reconciliation bill. Republicans relented after Manchin said on July 15 that he did not support fellow Democrats effort to increase taxes or pass new climate measures as part of the budget package.

Manchins change of heart on Wednesday appears to have angered Republican leaders who felt like they got the raw end of the deal. Late on Wednesday, House Republican leadership urged their members to vote against the Chips Act in retaliation to Manchins announcement, according to a memo seen by The Hill.