"We write to you to express our deep concern regarding a recent United Nations Panel of Experts report that connects North Korea to the Syrian government’s use of chemical weapons against its own people, and exposes North Korean sanctions evasion involving Russia and China," the letter said.
The report also claimed North Korean technicians had been working at chemical weapons and missile facilities in Syria, the senators wrote.
"It is imperative that the United States provides a swift and appropriate response to the continued use of chemical weapons used by President Assad and his forces, and works to address the shortcomings in sanctions enforcement," the letter said.
Senators David Perdue, John Cornyn, Ted Cruz, Cory Gardner, Orrin Hatch, John Kennedy, Mike Lee and Pat Toomey signed the letter.
