It is slightly worse than that. The provision was changed by Republicans… but set to kick in after Trump’s first term, so the negative effects landed on Biden. Now that Trump’s back in office, it’s safe to improve the economy again without the wrong party getting credit for it.

Given the changes to 41(d)(1)(A) and 280C(c)(1) that were paired with this reversion, we might not see things pick back up after all

https://www.morganlewis.com/pubs/2025/07/new-section-174a-re...

So why didn't the Biden admin reverse it? They were able to pass the IRA etc. they could've included this provision.

Maybe the Democrats do deserve the blame.

Seems like it's possible for them to share the blame.

Then why didn't the Democrats fix it when they were in power?

Googled a bit and it looks like they indeed did try to do so, but, again, didn't have the votes.

The premise of your question is not in good faith though; why is it always the Dems who should be blamed for failing to fix things Republicans fuck up deliberately in the first place?

Neither is your response in good faith. Reconciliation is common practice and has happened for decades. Why are you now pointing it as a Democrat vs Republican issue?