Trump wants to build up the military. There's just one glaring problem.

The majority of Americans at the prime age to serve in the armed forces are actually ineligible due to obesity, health concerns, education, or criminal records, Politico reports. In total, almost three-quarters of Americans between the ages of 17 and 24 are not fit to serve, putting a damper on the Trump administration's plans to beef up the armed forces.

"The U.S. military is already having a hard time attracting enough qualified volunteers," a new Heritage Foundation paper on the concerns concludes. "Of the four services, the Army has the greatest annual need. The Army anticipates problems with meeting its 2018 goal to enlist 80,000 qualified volunteers, even with increased bonuses and incentives."

Easing recruiting standards has been in consideration, although many are opposed. "We lowered the standards [in 2009], we signed more waivers for people who had acts of criminality than we usually did," said retired Army Lt. Gen. Tom Spoehr. "We paid the price … The last place that we would go is to mess with the standards."

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Still, even Spoehr notes that "obesity and the percentage of people overweight in the country has just skyrocketed in the last 10 to 15 years. Asthma is going up. High school graduation rates are still just barely acceptable and in some big cities they are miserable. Criminality is also not going away. We have to face the reality that these things in some cases are getting worse, not better."

That is to say nothing of the waning interest in joining the military. "Many of today's youth are not inclined to want to leave their family and friends," said United States Army Recruitment Command Sgt. Maj. Anthony Bowers, as reported by Army Times. "Family and friends, they oppose them joining the military service."