Donald Trump is expected to sign an executive order on Thursday to reclassify marijuana from Schedule I to Schedule III, following reports that the White House has been studying rescheduling for months.The change would not legalize recreational cannabis federally but would ease research barriers, open pathways for clinical trials, reduce some tax burdens for state-licensed dispensaries and could improve banking and investment access for the industry.Supporters including Vince C. Ning and several industry executives say rescheduling will accelerate research and investment, while critics such as Representative Mike Lawler and a group of House Republicans warn it could increase public-health risks and offer limited criminal-justice reform; officials say timing could still shift.