Mariotti said prosecutors would need to show evidence of a connection between Trump Jr.'s offer and his request for damaging information on Hillary Clinton - but he said that's not always easy.
The June 2016 meeting at Trump Tower, which The New York Times uncovered this summer, has drawn close scrutiny from the multiple investigations into whether Trump's campaign colluded with Russian Federation past year.
Veselnitskaya has pushed for years to try to roll back the Magnitsky Act, named after a Russian lawyer who died in custody in Moscow in 2009 after uncovering an alleged massive fraud.
"Looking ahead, if we come to power, we can return to this issue and think what to do about it, " Trump Jr. said of the 2012 law, Bloomberg cited Veselnitskaya as saying.
The report said Simpson's meeting Veselnitskaya and Fusion GPS' being bankrolled by the DNC, the Clinton campaign and Russian interests raises new questions about what role the firm played in the presidential election.
Trump Jr. and Kushner are now under investigation for their meeting with Veselnitskaya.
Veselnitskaya, a lawyer who has lobbied for the Magnitsky Act's repeal, drew Trump Jr.'s attention by offering evidence that the Ziff brothers, who are prominent Democratic donors, had allegedly evaded paying taxes for $1 billion in Russian investments.
U.S. ends 'protected' status for Nicaraguans
But the Department of Homeland Security already warned in its statement that a termination of the programme was "possible". Both Honduras and Nicaragua received initial TPS designations in 1999 after Hurricane Mitch devastated the two countries.
The issue Trump Jr. referred to was the Magnitsky Act, the 2012 law that slapped sanctions on various high Russian officials and reportedly enraged Vladimir Putin. She has received scores of questions from the committee, which is investigating possible collusion between Russian Federation and the Trump campaign. "With a quid pro quo, however, there is a feasible argument to also be made that there was a conspiracy to violate the Foreign Corrupt Practices Act by way of exchanging changes in US sanctions law for the documentation on Hillary Clinton". Ziff Brothers Investments LLC invested in Russian Federation with Browder using offshore entities, Veselnitskaya has said.
She didn't and the meeting quickly fell apart.
The DNC, Democrats in Congress and members of the media have been up in arms about alleged connections between Trump campaign officials and Russian Federation. Since the meeting was revealed, a Trump foreign policy advisor, George Papadopoulos has pled guilty to lying to the Federal Bureau of Investigation about his role in handling apparent Russian outreach to arrange a meeting between Trump and Russian President Vladimir Putin.
The Senate Judiciary Committee wants information about Russian hacking and interference in the election.
"I made up my mind a long time ago: My testimony must be honest, full and public", she said.
Lawyers for Fusion and Veselnitskaya did not respond to requests for comment.
Katsyv's company, Prevezon Holdings, was sanctioned against doing business in the United States for its alleged role in laundering more than $230 million, Fox News reported, citing US appeals court records.