US Democrats want to know why the Trump administration allowed two Russian spy chiefs under US and European sanctions to meet American intelligence officials in Washington last week.

Russia’s US ambassador said Sergei Naryshkin, head of the Russian Foreign Intelligence Service, was in the US to discuss counter-terrorism with his American counterparts.

Naryshkin was accompanied at the meeting in Washington by Alexander Bortnikov, who directs the top KGB successor agency known as the Federal Security Service, according to US officials. The two Russian intelligence officials were sanctioned in 2014 in response to Russian aggression in eastern Ukraine – Naryshkin by the US, and Bortnikov by the European Union.

Senate minority leader Chuck Schumer said the timing of the meeting is suspicious because it came just days before the Trump administration decided not to issue new sanctions against Russian politicians and oligarchs over Russian interference in the election. He released a letter demanding that Director of National Intelligence Dan Coats disclose details of the meeting by February 9.

Schumer said sanctions against Naryshkin impose severe financial penalties and prohibit his entry into the US without a waiver.

The State Department declined to comment, saying visa records are confidential by law.

The CIA would not confirm the meetings, saying only that any interactions with foreign intelligence officials would have been conducted in accordance with US law and in consultation with appropriate departments and agencies. Such meetings might occur more often than is publicly known.

Government agencies at times need to secure waivers to get certain individuals into the country, according to a US official.

The official said law enforcement agencies, for instance, might need a waiver to allow a witness in an arms trafficking case travel to America. Other US agencies might need to speak with officials from an enemy nation.