Some Democrats, including major bank critic Senator Elizabeth Warren of Massachusetts, have also argued a 2018 bank deregulation law is to blame.

From Reuters.

What does the adjective "major" modify in the NP "major bank critic"? Is it "bank" or "critic"?


It's ambiguous.

Maybe if you've been following the career of Warren and/or if you know what's in the 2018 law, you might be able to disambiguate it, but on the face of it, it's grammatically ambiguous.