The U.S. Embassy in Russia is temporarily suspending processing non-immigrant visa applications in response to Russia’s expulsion of American diplomats.

“Due to the Russian government-imposed cap on U.S. diplomatic personnel in Russia, all non-immigrant visa operations across Russia will be suspended on Aug. 23,” the U.S. Embassy said in a statement published Monday morning.

“Operations will resume in Moscow on Sept. 1; visa operations at the U.S. consulates will remain suspended indefinitely,” the statement added.

Non-immigrant visas are issued to travelers who want to visit the U.S. temporarily, as opposed to applying for permanent residency in the country.