Mexico’s Supreme Court has allowed a controversial energy policy to stand. 

The March 2021 law, which prioritizes energy produced by the national electricity utility the CFE over private producers, survived constitutional challenges Thursday at the nation’s highest court. Critics have said it will undermine private investment in clean energy in the country.

Mexico’s President Andres Manuel Lopez Obrador praised the ruling Friday, saying it will allow his government to rescue the government-owned utility.

After the ruling, the United States’ Ambassador to Mexico Ken Salazar released a statement saying the law will likely open the door to "endless litigation, creating uncertainty and impeding investment."