114 members of Congress pushed for evidence from President Donald Trump that he has support from head military officials on his ban of transgender military members.

Trump had made the claim over Twitter earlier this year that he made the decision “after consultation with my generals and military experts.” According to Pink News, insider officials said that Trump did not consult the Pentagon and instead made the move to please anti-LGBT Republicans.

“Our military must be focused on decisive and overwhelming victory and cannot be burdened with the tremendous medical costs and disruption that transgender in the military would entail,” he tweeted.

The letter sent by congressional democrats asks for any correspondence between the executive branch and Pentagon on the ban. No Republicans signed the letter.

Currently, five active duty servicemembers who are transgender are suing Trump in court. None of the plaintiffs have been identified to protect them from being taken out of service.

“The categorical exclusion of transgender people from military service lacks a rational basis, is arbitrary, and cannot be justified by sufficient federal interests,” their lawsuit claims.