The legislation lets faith-based agencies turn away anyone offending the operator's religious beliefs.
The state's governor is considering a special session to pass the anti-transgender law.
A bill allowing discrimination by adoption agencies is headed to the governor, and an anti-trans "bathroom bill" likely will soon be as well.
The four, from a Dallas suburb, are accused of assaulting and robbing gay men after arranging meetings via the app.
One would allow adoption agencies to turn away prospective parents because of religious objections; the other targets transgender student athletes.
See what happens when two antigay activists walk into a Texas salon in this exclusive clip from the sequel to Del Shores's Sordid Lives.
The GOP-backed bill would allow county clerks like Kim Davis to deny marriage licenses to gay couples.