President Trump's announcement this morning banning transgender individuals from military service stated that their service would cause the military to be "burdened with tremendous medical costs and disruption." However, a 2016 study by the nonpartisan RAND Corporation on the topic indicated just the opposite.

Why it matters: The reasons that Trump and his "generals and military experts" gave for the ban don't stand up to scrutiny, and the announcement seems more of a play to his base and a distraction from his growing discontent with Attorney General Jeff Sessions.

• The numbers: RAND estimates that there are about 2,450 transgender individuals in active duty assignments and another 1,510 in the Selected Reserve.
• The medical costs: The study showed that not all transgender individuals seek out gender transition-related health care, estimating that the total costs from gender transition among military members would be between $2.4 million and $8.4 million — 0.005% to 0.017% of all Department of Defense health care spending.
• The disruption: Using their highest estimates, RAND found that gender transition-related health care would prevent less than 0.1% of military forces from deploying — compared to the 14% of active duty Army members prevented from deploying because of routine legal, medical, or administrative reasons.