Jenner addresses Trump in a video posted on Twitter on Thursday night. She says, “From one Republican to another, this is a disaster.”

The Trump White House has ended a directive issued during Barack Obama's presidency that told public schools to let transgender students use bathrooms and locker rooms of their chosen gender.

Jenner is particularly critical of Attorney General Jeff Sessions, saying, “Apparently even becoming attorney general isn't enough to cure some people of their insecurities.”

Addressing Trump, the former Olympic champion says: “You made a promise to protect the LGBTQ community. Call me.”

Jenner came out as a transgender woman in 2015.