That is how the AP headline reads. The story opens with - "NEW YORK – In what could be one of the biggest counterterrorism seizures in U.S. history, federal prosecutors sought to take over four U.S. mosques and a owned by a Muslim organization suspected of being controlled by the Iranian government."
There are some Constitutional concerns about that government action - specifically 1st Amendment "freedom of religion" issues. There may also be some 4th Amendment questions to be answered. If the government is successful in its suit to seize these "terrorist" assets, including the mosques, would they be in violation of the 1st Amendment protection of "freedom of religion"?
Not being a lawyer of any kind, much less a Constitutional law expert, my layman's opinion is no, they would not. They will not have banned the religion, they will only have removed the availability certain specific, questionable, places of worship. The practice of the Muslim religion can still go on... just not in those particular mosques.