Dems: Red flags from Kushner sit-down with Russian banker

A convicted spy worked at the sanctioned Russian bank.

A senior White House official said that the conversation was "general and inconsequential" and that Kushner took the meeting as part of his campaign role of interfacing with foreign dignitaries. But the bank described the discussion to ABC News as a "negotiation" in which "the parties discussed the business practices applied by foreign development banks, as well as most promising business lines and sectors."

The December meeting came as the Kushner Companies, the family's real estate firm, was in the midst of what it has described in public statements as "active, advanced negotiations ... with a number of potential investors" about the redevelopment of the skyscraper it owns at 666 Fifth Avenue in New York City.

To date, neither Kushner nor the family real estate firm has explained the nature of the meeting with VEB. An official representing the Kushner firm responded to ABC News' questions Wednesday evening, saying Kushner was the only executive from his family's real estate firm to attend.

"VEB is not providing financing, lending or any other services to Kushner Companies," the official said.

"Mounting evidence implicates the Trump inner circle in possible collusion with Russian meddling," Blumenthal said. "The Trump White House seems increasingly to be an ethically flawed mix of family businesses, special interests and foreign interference, putting private gain over public interest."