Former US President Donald Trump is known to have had an active interest in the NFL over the years. The owner of the now-disbanded USFL team, the New Jersey Generals, had even publicly toyed with the idea of making a push for an NFL franchise.But what many might not know is that Trump's rival in office, Barack Obama, also has an active interest in the sport. Hailing from Chicago, Obama is a Chicago Bears fan and was present for Eli and Peyton Manning's MNF special Manningcast this week.Barack Obama@BarackObamaThanks to Peyton and @EliManning for having me on the Manningcast. It’s always good watching the game with a couple other retired guys. Don’t forget to register to vote at IWillVote.com.128461505Thanks to Peyton and @EliManning for having me on the Manningcast. It’s always good watching the game with a couple other retired guys. Don’t forget to register to vote at IWillVote.com. https://t.co/bqwHM5dzeEWhile Obama was busy dissecting the game and sharing a laugh with the Manning brothers while his beloved Bears were on, not everyone thought it to be quality television. In fact, best-selling author and vocal supporter of Trump, Nick Adams, tweeted that the segment was anything but.Nick Adams (Alpha Male)@NickAdamsinUSABarack Obama is ruining football.3686416Barack Obama is ruining football.Adams further went on to claim that 99% Americans would have preferred to watch Donald instead of Obama on Manningcast:"Nobody likes Barack Obama. 99% of Americans would rather be watching Donald Trump on the Manningcast right now. As the former owner of a team, President Trump actually knows football and can add something of substance to the broadcast. What the hell has Barack Obama ever owned?"Adams was of course referring to the former president's stint as owner of the Generals, which he had acquired in 1984. But did you know that there is one NFL franchise that he seriously considered taking over?Donald Trump made to regret skipping on Dallas CowboysLIV Golf Invitational - Bedminster - Pro-AmOwned by billionaire Jerry Jones, the Dallas Cowboys became the first franchise to have an estimated worth of over $8 billion. This, of course, makes them not only the most valuable team in the NFL, but the whole world.Jones had purchased the team for $150 million back 1989. The team's valuation has since sky-rocketed, making them the biggest sports franchise on the globe. And unfortunately for Donald Trump, the Cowboys empire could have all been his had he made the right decisions.Front Office Sports@FOSThe Dallas Cowboys are the first NFL team worth $8 billion.Donald Trump nearly bought them for $50M in 1983, but purchased a USFL franchise that folded two years later."I feel sorry for the poor guy who is going to buy the Cowboys ... he'll be known to the world as a loser."7472861The Dallas Cowboys are the first NFL team worth $8 billion.Donald Trump nearly bought them for $50M in 1983, but purchased a USFL franchise that folded two years later."I feel sorry for the poor guy who is going to buy the Cowboys ... he'll be known to the world as a loser." https://t.co/OBi3glnibGBack in the 80s, the former president nearly bought the franchise but backed out at the last moment. Right before Jones secured the deal, this is what the former Generals owner had to say:"I feel sorry for the poor guy who is going to buy the Cowboys. He'll be known to the world as a loser."While the former president has enjoyed success in other avenues of business, this deal is perhaps the one he most ends up regretting.