Exactly what law is being passed here?
The First Amendment to the United States Constitution "prohibits the making of any law respecting an establishment of religion, ensuring that there is no prohibition on the free exercise of religion, abridging the freedom of speech, infringing on the freedom of the press, interfering with the right to peaceably assemble, or prohibiting the petitioning for a governmental redress of grievances".
To my knowledge, no law has been passed. Nor has anyone's right to speech, assembly, or religion has been been abridged.
If the US president gives a speech and you can't get into the auditorium, are your rights being denied?
If the president invites people into the Oval Office but doesn't let others in, can those others sue?
This looks more like a publicity stunt than a serious legal issue.