Privacy for All Students, an organization based in California, has sent an open letter to GOP frontrunner Donald Trump following his recent comments on North Carolina’s bathroom legislation.

“We have compassion for those that believe that biology has betrayed them. We acknowledge their discomfort in traditionally sex separated facilities. As a society we have long made accommodations for some without violating the privacy of all,” the open letter reads.

North Carolina’s Gov. Pat McCrory recently signed legislation that blocks cities from permitting transgender people to use public bathrooms designated for people of the opposite sex.

Thursday morning on NBC’s Today Show, Trump was asked about the law and said transgenders should “use the bathroom that they feel is appropriate,” suggesting that the real estate mogul opposes North Carolina’s law.

Privacy for All Students is an advocacy organization that opposes California’s Transgender, Co-ed bathroom bill. The group’s open letter to Trump reads: