A group of United States senators is trying to halt $3.5bn in weapons sales to the United Arab Emirates and Qatar over concerns that the deals will personally benefit the family of U.S. President Donald Trump, Al Jazeera reported.

Two “resolutions of disapproval” were submitted on Thursday by Democratic Senators Chris Murphy, Chris Van Hollen, Brian Schatz and Tim Kaine, along with Senator Bernie Sanders, an independent who often votes with Democrats.

The legislators also issued statements accusing Trump of actively engaging in the “corruption of U.S. foreign policy” over the timing of the sales and recent investment deals.

The Department of State this week approved the $1.6bn sale to the UAE of Chinook helicopters and equipment, F-16 aircraft components, and spare and repair parts to support Apache, Black Hawk and Chinook helicopters. Initial reporting cited the figure as close to $1.3bn, but the $1.6bn figure was used in a statement from the legislators.

The lawmakers are also seeking to block $1.9bn in sales to Qatar of MQ-9B Predator drones and associated equipment, which was approved by the State Department in March.