The Oglala Sioux Tribe voted to ban South Dakota Gov. Kristi Noem (R) from the Pine Ridge Indian Reservation over her recent decision to sign into law a package of bills targeting opponents of the proposed Keystone XL pipeline and other oil and gas infrastructure projects in the state.

Julian Bear Runner, president of the Oglala Sioux Tribe, informed the first-term governor and former congresswoman in a letter Thursday that she is “not welcome to visit our homelands” until she rescinds support for two so-called “riot boosting” laws.

The legislative package, which Noem introduced and signed into law in March, grants state officials the authority to prosecute and sue not only individuals who protest pipelines on the ground but outside people and groups that support and fund anti-pipeline demonstrations.

Civil damages collected from those lawsuits would go into a fund to pay for law enforcement and other costs associated with “riot boosting,” a term the state has used to define the actions of rioting pipeline protesters and anyone who “does not personally participate in any riot but directs, advises, encourages, or solicits other persons participating in the riot to acts of force or violence.”

Noem has described the pipeline legislation as a “proactive approach that will spread the risks associated with pipeline construction.”

“My pipeline bills make clear that we will not let rioters control our economic development,” she said in a statement after signing the legislation in late March. “These bills support constitutional rights while also protecting our people, our counties, our environment, and our state.”

In his letter Thursday, Bear Runner accused Noem of infringing on Native Americans’ free speech rights and the oil industry of trying to trespass on the tribe’s sacred lands and waters.

“According to 97% of scientists, climate change is a very real existential threat to humanity ― likely the greatest we’ve ever faced,” Bear Runner wrote in his letter. “In light of this, it is clear that the First Amendment ― which trumps state law ― was intended to protect speech of exactly the type your laws attempt to abrogate.”