Section 2401-2422 of the H.R. 1 - For the People Act of 2021 would require states to set up independent districting commissions in order to prevent gerrymandering. This seems pretty clearly to infringe on state's rights, and doesn't seem like it would be under the federal government's authority to require (as good for democracy as it would be). I've skimmed the text, but I am not a lawyer--was this written in some way which tries to anticipate this challenge? At the moment, it appears there's little chance of this bill passing the senate, but presumably the authors would still try to write it such that it would stand up to any potential challenge as strongly as possible, should it get passed.
Is this part of HR1 written in such a way that it appears to be enforceable, based on the authority of the federal government? If not, is there such a way for the federal government to require states to set up independent districting commissions without amending the constitution?