The business tycoon-turned-reality TV star became the topic of discussion during a recent interview with BET.com, when The Hurt Locker actor was promoting his political drama Our Brand Is Crisis.
MACkie plays a campaign manager to a presidential candidate in the film, and when asked whose campaign he would rather run in real life, Trump's or Democratic candidate Hillary Clinton, MACkie answered, "I would 100 per cent want to run Trump's campaign."
"First, that would be the best party ever if he won," he explained. "Second, I think Trump's an easy sell, because you can sell him as a guy who worked his way up from nothing. He's a 'pull-yourself-up-from-the-bootstraps' candidate, people would identify with that."
When pressed to admit if that was an endorsement for the presidential hopeful, MACkie replied, "I'm on the bandwagon. I'm drinking the Kool-Aid!"
After news of MACkie's endorsement spread, fans voiced their dismay at the actor's comments, pointing out Trump's father was a wealthy businessman whose estate was worth a reported $250 million (£156 million) upon his death in 1999.
MACkie took to Twitter.com on Monday (19Oct15) to clarify his comments, assuring his followers he hasn't officially backed Trump.
"Sorry Donald, that wasn't an endorsement," MACkie wrote. "Just a bad attempt at a joke, I guess?"
Trump, who is currently the frontrunner as the Republican candidate, sparked controversy in June (15) when he announced his political bid, after branding many of the Mexican immigrants in America as "rapists" who take crime and drugs into the country.