Several black lawmakers replied to the e-mail, complaining that it was offensive.
The message, sent by Senate researcher Tammy Crain-Waldrop, shows a photo of Obama made to look like a white man and says, "Do you like him any better now? No? Me neither ..... Then you're not a racist."
After she sent the e-mail, Crain-Waldrop sent another message apologizing and saying she sent it to the state Capitol e-mail post office box by mistake.
Senate spokeswoman Brenda Hodge says Crain-Waldrop has been suspended without pay pending an investigation.