The letter claims the continuation of Azerbaijan's "destructive" policy, which threatens peace and stability in the region and "goes against U.S. interests".

The letter said in part: "The United States can and must expand its engagement with the lawfully and democratically established Nagorno Karabakh Republic. These ties should not be dictated by outside forces but rather should be guided by the shared values of our two nations."

Taking a stance on the letter, Public Affairs Officer of the US embassy in Azerbaijan, Jonathan Henick stressed that the Congress is another part of the democratic system in the USA, APA reports.

"Congressmen often send such letters to the President. US president determines foreign policy of the US. Official Washington doesn't share the same opinion with the letter authors."