We got the actor -- who spent years in various prisons back in the day -- at Trejo's Cantina in Hollywood, and asked him if prisoners should be allowed to vote from behind bars, or while on probation or parole.
Danny says ex-inmates should be allowed to vote, along with people being held in county jails before they've been convicted. He's staunchly in favor of states -- like Florida has done -- restoring voting rights to folks who complete their prison bids.
As for prison reform's impact on the election -- Danny scoffs at President Trump tooting his own horn. Despite, the fact POTUS signed the First Step Act into law ... Trejo doesn't think he deserves all the credit.
Instead, he says Trump's just standing on the shoulders of people like Kim K ... and while he's overlooking one HUGE issue for America's overcrowded prisons.