Charles Foster Johnson is a Baptist minister in Texas and founder of Pastors for Texas Children.

He wrote an op-ed in the Houston Chronicle about the threats that vouchers pose to religious liberty, and his specific concern that Brett Kavanaugh endangers religious liberty because of his hostility to the wall of separation, which protects the church from the intrusions of the state.

He writes, in part:

For nearly 150 years, our state Constitution has included a “no-aid” clause that protects the religious freedom of all Texans by ensuring that public funds are not used to support any private religious school or religious denomination. In fact, the Texas Constitution’s ironclad, explicit requirement for the Texas State Legislature to “make suitable provision for the operation and maintenance of an efficient system of public free schools” was in direct reaction against Texas settlers’ taxes having to underwrite religious schools at the founding of our state.

Our message and movement to protect and preserve religious liberty by opposing private-school vouchers has now spread to Oklahoma, Tennessee and Kentucky and will soon launch in a number of other southern and midwestern states, where voluntary religious faith is so central. Simply put, we want the government to stay out of this intensely personal arena of our lives.

If Kavanaugh joins the Supreme Court, I fear it will strike down this “no-aid” clause and similar clauses that exist in 37 other state constitutions. This reversal would allow state money to flow to religious schools. A flurry of state-funded voucher programs would soon follow, putting both religious freedom and our children in peril.