Senate Minority Leader Chuck Schumer will vote for a measure up in the Senate as early as this week that would oppose a deal to sell precision-guided munitions to Saudi Arabia.
Schumer, D-N.Y., said he does not support the sale because of the country's weak human rights record and support of terrorism.
"The human rights and humanitarian concerns have been well documented and are important," Schumer said in a statement. "Of equal concern to me is that the Saudi government continues to aid and abet terrorism via its relationship with Wahhabism and the funding of schools that spread extremist propaganda throughout the world."
The resolution is sponsored by Sens. Rand Paul, R-Ky., and Chris Murphy, D-Conn. Lawmakers are expected to vote on the measure Tuesday.
The Senate has a history of voting for resolutions opposing arms deals with Saudi Arabia, although Democratic opposition has increased under the Trump administration.
The measure involves three specific arms sales: Joint direct-attack munitions for Royal Saudi Air Force F-15s; Kaman bomb fuzes for MK-80, BLU-109 and BLU-100 warheads; and Raytheon Paveway bombs for Saudi F-15, Tornado and Typhoon aircraft.
President Trump announced a $110 billion arms deal with the Saudis while visiting the country last month. Since then, it's become clear that about a fifth of the deal included commitments reached under the Obama administration, and the U.S. government has not described in detail any new elements of the deal, although details have begun to leak out.
The Paul-Murphy measure is not expected to pass. A similar resolution failed overwhelmingly last year during Obama's final months in office.