In issuing his memo, Trump took aim at the Obama administration, which previous year reversed the ban on transgender people openly serving in the USA military.
In announcing the ban in a series of tweets in July, Trump argued that allowing transgender military service members would involve "tremendous medical costs and disruption" without citing any evidence for the claim.
The new complaints argue Trump's policy is motivated by animus toward transgender people and violates the constitutional rights of transgender Americans who want to serve in the military, and they ask federal courts to suspend the policy immediately.
Trump's guidance directs the Departments of Defense and Homeland Security to develop plans for how best to deal with transgender service members who came out under the more trans-friendly policies put into place by the Obama administration.
The ACLU has filed a separate suit in the United Stated District Court for the District of Maryland by the ACLU on behalf of transgender service members, including Petty Officer First Class Brock Stone and others.
The well-funded pro-transgender Palm Center also complained August 28 that Trump's policies create special policies for any soldiers who are trying to live as members of the opposite sex. The plaintiffs include Staff Sgt. Catherine Schmid, a 33-year-old woman now serving in Joint Base Lewis-McChord who has applied to become an Army warrant officer.
Thousands of transgender Americans serve in the armed forces, putting themselves in harm's way to protect the rights and freedoms in the US, the ACLU said in the complaint.
"Allowing men and women who are transgender to serve openly and providing them with necessary health care does nothing to harm military readiness or unit cohesion", Block added.
The president left open the possibility of permitting transgender military service in the future if the Secretary of Defense "provides a recommendation. that I find convincing". "The reality is the Department of Defense concluded after years of study that is baseless". She is honored to serve her country, and she deserves to continue!
Two weeks after Trump initially announced the ban, GLBTQ Legal Advocates and Defenders (GLAD) and the National Center for Lesbian Rights sued in Washington, D.C., on behalf of five transgender service members with almost 60 years of combined military service.
This upended the Obama administration's change a year earlier that lifted a ban on transgender service members. "We are proud to be a plaintiff on behalf of our transgender members now serving or wishing to enlist or commission, but who find their careers and their future under attack - and we thank all of the plaintiffs, Lambda Legal and Outserve-SLDN for their leadership in challenging this risky directive".