WASHINGTON The Russian lawyer President Donald Trump s son, son-in-law and campaign chairman met last year with the understanding she would provide damaging information the Russian government had acquired on Hillary Clinton was simultaneously leading a lobbying effort to repeal U.S. sanctions that Russian President Vladimir Putin loathes.

Natalia Veselnitskaya, a lawyer for a powerful Russian oligarch and government official, met with Donald Trump Jr. , Jared Kushner and then-campaign chairman Paul Manafort on June 9, 2016, at Trump Tower, according to emails Trump Jr. released Tuesday . Veselnitskaya never delivered the damaging information on Clinton, Trump Jr. told The New York Times. But her interests were nevertheless in sync with the Kremlins: She was working to repeal the Magnitsky Act, a 2012 law that imposed sanctions on several Russian officials and businessmen.

Moscow was outraged by the Magnitsky sanctions, Putins then-deputy foreign minister said in 2012, and the Russian government retaliated by banning Americans from adopting Russian children.

Veselnitskaya never registered as a foreign agent, and its not clear whether she had Moscows financial support in her campaign to reverse the American law. But her efforts were extensive. Last year, she headed a Washington-based nonprofit, the Human Rights Accountability Global Initiative Foundation, that describes itself as dedicated to overturning the Russian adoption ban. The group provided the main lobbying thrust for powerful Russian oligarchs and top directors of state-backed entities who were allied with their government in trying to roll back the sanctions, according to lobbying disclosure forms filed with the U.S. Senate .

Veselnitskayas group hired Rinat Akhmetshin, a Russian-American former Soviet military officer once described as a gun-for-hire, to lobby Congress in April 2016. In May it brought on Cozen OConnor lawyer Howard Schweitzer, a former official at the Export-Import Bank. In June, as it ramped up its lobbying campaign, her group hired former Democratic Rep. Ron Dellums of California.

The law Veselnitskaya was fighting against is named after Sergei Magnitsky, a Russian lawyer and accountant who accused Russian officials in 2008 of orchestrating a $230 million tax fraud scheme. He was accused of tax evasion and died in jail days before he would have had to be put on trial or released.