K.S.A. 60-5101

While the legislature fully recognizes the right to contract freely under the laws of this state, it also recognizes that this right may be reasonably and rationally circumscribed pursuant to the state's interest to protect and promote rights and privileges granted under the United States or Kansas constitution, including, but not limited to, equal protection, due process, free exercise of religion, freedom of speech or press, and any right of privacy or marriage.