But that meeting remains a subject of investigation by special counsel Robert Mueller, who is probing Russian interference in the 2016 presidential election and possible collusion by the Trump campaign.
And an issue that Veselnitskaya raised at the Trump Tower meeting is closely related to the scheme that led to the civil case, U.S. vs. Prevezon Holdings, in which she is accused of acting criminally as a lawyer.
In that civil case, Veselnitskaya was representing defendants accused of an "elaborate" $230 million tax refund fraud scheme, according to authorities.
The federal government filed the case in 2013 in an effort to recover several million dollars worth of property, primarily comprised of New York real estate, which was allegedly obtained to launder a portion of the money swindled in the tax refund scheme.
That scheme was uncovered by a Russian accountant named Sergei Magnitsky, who was arrested after helping report the fraud to Russian authorities.
Magnitsky's death in custody led to passage of a 2012 U.S. law, the Magnitsky Act, which imposes sanctions on Russians believed to be responsible for his death.
At the Trump Tower meeting, Veselnitskaya urged Trump campaign officials to undo the Magnitsky Act sanctions.
In the Prevezon case, she submitted a declaration that purported to have "been independently drafted by the Russian government," and which supposedly exonerated her clients, prosecutors said.
But Veselnitskaya is accused of hiding from the judge in the case that she had "participated in drafting those supposed exculpatory findings in secret cooperation with a senior Russian prosecutor," according to federal prosecutors.
Veselnitskaya attended a court hearing for an appeal of the money laundering case on the same day, June 9, 2016, that she went to Trump Tower on Fifth Avenue in New York for the sit-down with people close to Trump.
Trump's son, Donald Trump Jr., has said that he took the meeting with Veselnitskaya after being told that she was willing to share dirt on Clinton.
WATCH: Former ambassador on U.S.-Russia relations