Via CNN:
Of course, He might be breaking the law:
18 USC Sec. 713 …
(a) Whoever knowingly displays any printed or other likeness of the great seal of the United States, or of the seals of the President or the Vice President of the United States, or the seal of the United States Senate, or the seal of the United States House of Representatives, or the seal of the United States Congress, or any facsimile thereof, in, or in connection with, any advertisement, poster, circular, book, pamphlet, or other publication, public meeting, play, motion picture, telecast, or other production, or on any building, monument, or stationery, 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.(b) Whoever, except as authorized under regulations promulgated by the President and published in the Federal Register, knowingly manufactures, reproduces, sells, or purchases for resale, either separately or appended to any article manufactured or sold, any likeness of the seals of the President or Vice President, or any substantial part thereof, except for manufacture or sale of the article for the official use of the Government of the United States, shall be fined under this title or imprisoned not more than six months, or both.
Of course, The Ramones used one, on a tour once:
The difference is, that the Ramones are not running for President and Barack Obama is. So, that might make a difference.
I guess it is up to the Government to decide if they want to enforce the law or not, which you know that they won’t, and face all that backlash? I don’t think so.