© Voice of Russia
The United States has said Aboutalebi would not be granted a permit to take up his post in New York because of his links to the student demonstrators who stormed the American embassy in Tehran in 1979.
In his comments on Saturday, Araqchi said the foreign ministry was pursuing the issue of visa denial "through legal mechanisms at the UN", AFP reports.
Tehran said earlier that Washington's objection to Aboutalebi is unacceptable and the situation, which comes as world powers push for a nuclear deal with Iran, appears to be heading towards stalemate.
The row, stoked by fury in the US Congress, also presents a stiff challenge to President Barack Obama's push for a diplomatic breakthrough with Iran after decades of mistrust.
As the host government of the United Nations, the US is obliged to issue visas to diplomats who serve at the New York-based institution.
It is believed that Washington has never before denied a visa for a UN ambassador, although Tehran withdrew its nominee once in the early 1990s.
The visa episode reflects the impact that the seizure of the embassy and the hostage crisis that followed 52 Americans were held for 444 days in Tehran still has on US perceptions of the Islamic republic.
The United States will not grant a visa to Tehran's newly appointed UN ambassador, Hamid Aboutalebi, over his alleged links to the 1979 US hostage crisis, the White House said Friday.
"We have informed the United Nations and Iran that we will not issue a visa for Mr Aboutalebi," White House spokesman Jay Carney said.
As the host government, the United States generally is obliged to issue visas to diplomats who serve at the United Nations, although there have been exceptions.
has own legal norm and by that norm, the same one, would be judged to USA also. When US realize that, then would be too late. But who cares.