"We, as Turkey, will not give up on common sense at a time when regional and global tensions have been rising", said Prime Minister Binali Yildirim in a speech to provincial governors in Ankara.
On Sunday, the U.S. Embassy in Ankara announced it had suspended non-immigrant visa services at all diplomatic facilities in Turkey.
"We have felt at home during this visit to Serbia", Erdogan said.
He promised more Turkish investments, including a project to build a highway linking the Serbian and Bosnian capitals.
Immigrant visa services are for those seeking to live in the USA permanently.
The Turkish Embassy in Washington retaliated immediately by issuing a similar statement that mirrored the one by the US.
"Of course, the implementation of our goals will be facilitated, inter alia, by the arrangement of a special communications line, which has recently been set up between the presidents of Ukraine and Turkey", Poroshenko said.
The statement also specifically alluded to American citizens applying for visas from within the USA, and was not clear whether it applied to those applying from other countries.
The US and Turkey on Sunday indefinitely halted all non-immigrant visa services to each other's citizens amid deepening differences between the two North Atlantic Treaty Organisation allies.
Turkey's president Recep Tayyip Erdogan, who is paying an official visit to Belgrade, said he expects Turkish companies to double the number of employees in Serbia next year. "I hope the U.S. will revise its decision in this light", Abdulhamit Gul told A Haber television.