He couldn't. He would have had to have blamed Jimmy Carter in 2013 when he was saying this:
$1:
"Some people may know that Malia actually has a peanut allergy," Obama said in a statement Wednesday night. "She doesn't have asthma, but obviously making sure that EpiPens are available in case of emergency in schools is something that every parent can understand."
http://www.usatoday.com/story/theoval/2 ... g/3524363/