The U.S. Supreme Court on Monday declined to hear (pdf) a challenge to President Doanld Trump’s proposed expansion to the U.S.-Mexico border wall brought by conservation and animal protection groups who said the administration improperly skirted environmental laws in its pursuit of the project.

The groups, as Bloomberg explained,

According to the Animal Legal Defense Fund, which brought the legal challenge along with Defenders of Wildlife and the Center for Biological Diversity,

Expressing disappointment that the high court won’t take up the case, Brian Segee, a senior attorney at the Center for Biological Diversity, told Reuters, “Trump has abused his power to wreak havoc along the border to score political points.”

The president, he added, is “illegally sweeping aside bedrock environmental and public-health laws. We’ll continue to fight Trump’s dangerous wall in the courts and in Congress.”