It looks like that specifically forbids them from enforcing the law, not public works projects. And there seem to be several exemptions. https://en.wikipedia.o

It looks like that specifically forbids them from enforcing the law, not public works projects. And there seem to be several exemptions. https://en.wikipedia.org/wiki/Posse_Comitatus_Act https://en.wikipedia.org/wiki/Posse_Comitatus_Act