I know it is silly to expect our federal government to abide by the restrictions set forth in the constitution, but do they even make an attempt to justify such things?
Two words ; Commerce Clause.
90% of all the he BS bills cite the Commerce Clause as their their constitutional basis in nonsensical legalize. This includes crap like Hate Crime and Gun Laws.
Thankfully under the 'Rehnquist Court' some of the most egregious were ruled unconstitutional as they definitely over reached in citing it. To this day Di-Fi is still in a snit over her 1,000 ft gun free school zone law going down in flames. Last year she still had screed on her senate web page about it. In effect she said, 'so what if it's illegal, I meant good and its for the children'.
And during Roberts and Alito's hearings they were specifically grilled on how they saw Congress' use or limits in using it. Durbin as I recall was the most 'inquisitive'.
If SCOTUS limits it's use strictly per the Constitution's intent, 'to regulate commerce', Congress could stay home for nine months of the year.