Yeah, that's not true at all. The NLRB, like all agencies, was created by act of congress and given a remit to regulate areas of civic life within a specific ra

Yeah, that's not true at all. The NLRB, like all agencies, was created by act of congress and given a remit to regulate areas of civic life within a specific range of factors. A complainant can try to argue that a specific regulation is outside their remit or otherwise in contravention to other Constitutional protections, but they can't just say the agency has no right to make rules. There's a gigantic stack of precedent that Congress or the courts can rein in specific rules, but so long as they within the bounds set in their charter, they are absolutely allowed to make new rules with the force of law (ie can the EPA regulate carbon emissions as "pollution"). It's just standard bureaucracy since it would be utterly impossible to put every single minute regulation up for Congressional debate. Especially when they require niche technical expertise to even understand.