Donald Trump Jr. and Paul Manafort are scheduled to testify before the Senate Judiciary Committee next week, according to a notice of the hearing posted on the committee's website.

The public hearing will occur Wednesday, July 26, at 10 a.m. Eastern time.

Trump Jr., President Trump's eldest son, and Manafort, Trump's former campaign manager, are under scrutiny after it was revealed earlier this month that they engaged in a meeting in June 2016 with a Russian lawyer who promised damaging information on Democratic presidential nominee Hillary Clinton.

The hearing is entitled, "Oversight of the Justice Department's (Non) Enforcement of the Foreign Agents Registration Act: Lessons from the Obama Administration‎ and Current Compliance Practices." The Foreign Agents Registration Act is a federal law requiring agents of foreign governments to disclose their work.

Sen. Chuck Grassley, R-Iowa, Judiciary Committee chairman, and ranking member Sen. Dianne Feinstein, D-Calif., say they will issue subpoenas if Trump Jr. and Manafort do not voluntarily agree to testify.

The original hearing was scheduled for Wednesday, June 19, but was postponed less than 24 hours prior.

Taylor Foy, a spokesman for Grassley, told the Washington Examiner the hearing was postponed as he and Feinstein "work together to schedule additional witnesses and seek relevant documents."

Still on the witness list is William Browder of Hermitage Capital Management. Browder's late lawyer Sergie Magnitsky has loose ties to Natala Veselnitskaya, the Russian attorney who led the now-infamous June 2016 meeting.

Glenn Simpson is also still listed as a witness, though he has said he would not attend the hearing. Simpson is the co-founder of Fusion GPS, an opposition firm that commissioned the so-called dossier on President Trump.

Meanwhile, White House senior adviser Jared Kushner, who is also President Trump's son-in-law, plans to testify in a private session before the Senate Intelligence Committee next week, according to a report Wednesday.

An attorney for Kushner confirmed the meeting, scheduled for Monday, July 24, to ABC News.

Trump Jr., Manafort and Kusher were all part of the June 2016 meeting.