This warning is a turning of tables for the United States — following the series of terrorist attacks in Turkey over the last year, the U.S. Department of State has issued numerous warnings to its citizens against traveling to Turkey.

In the most recent advisory, updated on Oct. 29, it said, “U.S. citizens should avoid travel to southeast Turkey and carefully consider the risks of travel to and throughout the country. The U.S. Department of State is updating this Travel Warning to reflect the October 29, 2016, decision to order the departure of family members of employees posted to the U.S. Consulate General in Istanbul, Turkey. The Department of State made this decision based on security information indicating extremist groups are continuing aggressive efforts to attack U.S. citizens in areas of Istanbul where they reside or frequent.”

Turkey’s warning may be, in part, retaliation for this strong statement, Mr. Taylor said. “We came down pretty hard on Turkey after their terrorist attacks and attempted coup, and this is a little bit of tit for tat,” he said.

But while tourism to Turkey from the United States has decreased since the terrorist attacks there — over 20 percent fewer American tourists visited Turkey in the first five months of this year compared with the same period last year, according to the Turkish Culture and Tourism Office in New York City — Mr. Taylor said that the warning from Turkey is unlikely to result in a dramatic decline of Turkish citizens coming to the United States. “Tourism from Turkey might be impacted in the cities where the protests are happening in the U.S. but only a little, and I don’t think business travel will be affected,” he said.

(The number of foreign visitors overall to the United States was on the rise earlier this year — nonresident arrivals to the United States increased 2.1 percent from January to April, compared with the same period in 2015, according to the U.S. Department of Commerce.)