An Oklahoma agency has rejected the request of a gay man who wanted to purchase a vanity plate for his car declaring "I'm Gay."

"I always thought vanity license plates were to express something about yourself," said Keith Kimmel, the man who requested the plate. "Me being gay is one of my leading traits, so I thought, Hey, why not?"

However, the Oklahoma Tax Commission, which regulates license plates, said Kimmel's plate would violate its policy of banning offensive language. Kimmel countered that "favoring certain viewpoints is not allowed" under the U.S. Constitution, according to KOKH News.

Commissioner Russ Nordstrom told the station that it would be offensive for anything sexual to be on a license plate, and he advised Kimmel to get a bumper sticker.

Kimmel said on Saturday that he and his attorney are still weighing whether to file a suit against a state or federal court.