Sens. Cory Gardner, a Colorado Republican, and Elizabeth Warren, a Massachusetts Democrat, introduced a bill Thursday meant to protect the laws of states that have legalized some form of marijuana from federal intervention.
Trump spoke amid ongoing tension between eight states including California and Washington DC that have legalized all adult use of marijuana and federal law that makes it illegal.
Warren quipped they were "lining them up like Noah's Ark" - one Democrat for each Republican.
The bill in question, known as the Strengthening the Tenth Amendment Through Entrusting States or (STATES) act, was introduced yesterday by Sens. This would allow businesses that sell marijuana to operate without fear of prosecution by the Justice Department.
Gardner, for his part, said in a Thursday press conference announcing the bill that he had spoken with Trump about the bill.
Warren said the goal of the legislation is to "ensure that each state has the right to determine for itself the best approach to marijuana within its borders".
A legally grown marijuana plant is pictured at farm in OR in this undated stock image. This move has possibly paved the way for a federal crackdown on legal marijuana.
The Bill C-45 was first introduced in the Senate and given first reading on November 28, 2017 after it was passed in the House of Commons on November 27.
Sessions's hard-line approach to marijuana has put him at odds with members of his own party, and as the midterms approach, polls show that 70 percent of voters oppose the enforcement of federal prohibition in legalized states, so the legislation could very well find its way to the president's desk.
"Outdated federal marijuana laws have perpetuated our broken criminal justice system, created barriers to research, and hindered economic development", Warren said.
Another bill expands the state's medical marijuana program and allows any health-care practitioner permitted to prescribe controlled substances to write prescriptions.
Warren expressed support for legalization during her 2016 re-election campaign in MA, whose residents voted to legalize the drug that year.