That political press release doesn't support your earlier point that it was proven "unconstitutional." In fact review of the SCOTUS opinion shows that they (6-3) found that OSHA exceeded their congressional authority, not violated the US Constitution.

> “Although Congress has indisputably given OSHA the power to regulate occupational dangers, it has not given that agency the power to regulate public health more broadly,” the court wrote

If you want to show how this was unconstitutional then you'll need to show something else entirely. This SCOTUS opinion isn't proof of that, no matter if it is from a ".gov" site or not.