Senate Judiciary Committee Chairman Chuck Grassley is asking the State Department and Department of Homeland Security for more information on the Russian-American lobbyist who attended a meeting at Trump Tower with representatives of the president's family and campaign in June 2016.

Grassley, R-Iowa, sent a letter to Homeland Security Secretary John Kelly and Secretary of State Rex Tillerson on Monday asking for visa records and documentation for the lobbyist, Rinat Akhmetshin, as well as information on his travel activity.

In June 2016, Akhmetshin and a Russian lawyer, Natalia Veselnitskaya, met with Donald Trump Jr., Jared Kushner, and former Trump campaign chairman Paul Manafort at Trump Tower.

Trump Jr. attended the meeting, which included British publicist Rob Goldstone, a translator, and a Russian businessman, because he was promised damaging information on Hillary Clinton. But the president's eldest son said the gathering failed to yield any information and instead focused mostly on repeal of the Magnitksy Act, a 2012 law that punished Russian human-rights abusers.

After details of the meeting were revealed last week, Grassley requested information from Tillerson and Kelly on visa and parole information for Veselnitskaya.

Grassley's inquiries into Akhmetshin and Veselnitskaya aren't new.

The Judiciary Committee is currently investigating allegations that Russian government agents, including Akhmetshin and Veselnitskaya, failed to register under the Foreign Agents Registration Act while working on behalf of the Russian government to repeal the Magnitsky Act.

As part of that probe, Grassley asked Kelly for immigration information and received Akhmetshin's alien file.