Attorney General Phill Kline is concerned that if a sodomy case before the courts goes against the state, the Kansas marriage law and laws against sex with children will be nullified.
Kline held a news conference on Monday about the case of Matthew
Limon, convicted in 2000 of having sex with a 14-year-old boy.
That was in a group home for the developmentally disabled.
The defendant's attorney, working for the ACLU, argues that Limon's 17-year prison sentence is unfair.
The defense says another Kansas sex law provides a lesser penalty if the participates are within four years of the same age.
But that applies only to heterosexual sex.
Kline was filing his response to ACLU arguments, which he said are so broad they could result in abolishing state laws.