Making a law against it, that is valid under the constitution...

The part that says...

Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assem- ble, and to petition the Government for a re- dress of grievances.

Make a law against the part that says not to make a law against it?

I mean, it's idiotic and on message for Trump.