State Senate Majority Leader Chris Holbert and Sens. Tim Neville and Vicki Marble sent a message to their fellow Republican in the White House this month: continue to keep federal hands off Colorado’s pot.

Colorado Politics obtained a copy of the letter they penned to President Trump, urging him to keep his word from the campaign trail to respect “the power of the states to speak, act and legislate in a constitutionally guaranteed and sovereign manner” as outlined by the 10th Amendment.

They were referring to pot.

Holbert, Neville and Marble cited Trump’s recent bipartisan work on a budget agreement that extended the Rohrabacher-Farr Amendment. The act shields states that have legalized marijuana from federal enforcement, as long as those states regulate marijuana efficiently and effectively.

Attorney General Jeff Sessions and some House Republicans have sought to scuttle those protections. Trump, however, stepped in to at least temporarily extend Rohrabacker-Farr as part of a surprise budget deal with Democrats.

“While some of us opposed one or both of the recent amendments made to our state Constitution relative to marijuana, the majority of those who voted on those matters approved legal cannabis use, both medical and recreational, here in Colorado,” the three senators wrote. “As state legislators, we are now bound by oath to that Constitution and we look to the federal government to honor the will of the People, as we must.”

Colorado Politics explained the statehouse GOP’s nuanced evolution on pot this month. Republicans see proper regulation as part of the deal voters made with the industry, not to mention the massive amounts of tax revenue marijuana has brought to the state. Republicans in the statehouse say that marijuana is now a legal industry, and as such deserves to be regulated fairly.

“As a group of center-right legislators, we hope to work with you to enhance the safety of our citizens while fortifying the constitutionally vested powers of state-based government,” the Colorado senators continued.

Sessions is cc’d on the letter to Trump, along with Colorado’s Republican congressional members – Sen. Cory Gardner and Reps. Doug Lamborn, Mike Coffman, Scott Tipton and Ken Buck.