This ought to solidify Malia Obama’s vote for Hillary Clinton.

On the same day the Drug Enforcement Administration denied a petition to remove marijuana from its Schedule I list under the Controlled Substances Act, Clinton said she would reclassify weed if she becomes president.

“Marijuana is already being used for medical purposes in states across the country, and it has the potential for even further medical use,” Maya Harris, a senior policy adviser to Clinton’s campaign, said in a statement to the Denver Post.

“As Hillary Clinton has said throughout this campaign, we should make it easier to study marijuana so that we can better understand its potential benefits, as well as its side effects.”

The move by the DEA leaves pot in the same class as heroin, LSD and other harmful substances — but Clinton’s move would change that.

Marijuana is legal in some form or another in 23 states plus Washington, DC. But, as the DEA petition makes clear, it is still illegal under federal law.

Clinton has maintained that she has never smoked pot, despite reports that say otherwise.

Bill Clinton famously said, “I experimented with marijuana a time or two, and didn’t like it. I didn’t inhale and I didn’t try it again.”

Meanwhile, 18-year-old Malia — President Obama’s elder daughter — was spotted puffing on what appeared to be a joint at a concert last month.