Democrats on the House Judiciary Committee will be returning early from their summer recess to consider gun-violence legislation in the wake of this month's mass shootings in Texas and Ohio.
The Marijuana Opportunity Reinvestment and Expungement Act would remove pot from the Controlled Substances Act.
The U.S. Justice Department suggested on Tuesday that it may completely withhold special counsel Robert Mueller's unredacted report from Congress.
White House counsel Pat Cipollone says the documents "remain legally protected from disclosure under longstanding constitutional principles."
The threat marks the latest escalation between the Trump administration and House Democrats.
The White House has told two U.S. House Democrats it will not turn over documents that could show whether President Donald Trump sought to intervene in the regulatory review of AT&T's $85 billion acquisition of Time Warner.
Democrats intensified their demands for Robert Mueller's full report after learning the special counsel's findings from his Trump-Russia investigation run to more than 300 pages.
President Donald Trump declassified a trove of documents related to the early days of the FBI's Russia investigation, including a portion of a secret surveillance warrant application and former FBI Director James Comey's text messages.
The Senate minority leader, the vice chair of the Senate Intelligence Committee, and more than a dozen members of the Senate Foreign Relations committee all called on the president to cancel the meeting.
U.S. President Donald Trump told Republican lawmakers he would back either of the immigration bills making their way through the House of Representatives.