If anything Cruz should introduce a bill stipulating that those adjudicating constititutional matters and blatantly obfuscating the Bill of Rights will be sentenced to 20 years of hard labor.
The 10th doesn’t dictate federal law and regulations on marriage, and that has been very important to the left/libertarians supporting it.
For instance gay marriage in the military, for federal employees, and in immigration and foreign policy makes a state trying to forbid it, impossible in reality.