"(a)Whoever knowingly displays any printed or other likeness of the great seal of the United States... for the purpose of conveying, or in a manner reasonably calculated to convey, a false impression of sponsorship or approval by the Government of the United States or by any department, agency, or instrumentality thereof, shall be fined under this title or imprisoned not more than six months, or both."
https://www.law.cornell.edu/uscode/text/18/713
"(a)Whoever knowingly displays any printed or other likeness of the great seal of the United States... for the purpose of conveying, or in a manner reasonably calculated to convey, a false impression of sponsorship or approval by the Government of the United States or by any department, agency, or instrumentality thereof, shall be fined under this title or imprisoned not more than six months, or both."
Unless, he's not really president 😉