Edward Snowden is set to be a hot topic at Tulsi Gabbard’s confirmation hearing this week. Senators are gearing up to ask her about her past support for the former government contractor, who exposed U.S. surveillance programs and fled to Russia in 2013.

While serving in Congress, Gabbard pushed for legislation that would offer more protections for whistle-blowers like Snowden. She even teamed up with former Florida congressman Matt Gaetz to propose dropping all charges against him. Now, as President Trump’s pick to lead the nation’s intelligence agencies, her stance on Snowden is under the microscope.

Senator Susan Collins, who will be questioning Gabbard, has already voiced concerns. She pointed out that Snowden’s actions put lives at risk and questioned how Gabbard views his actions given her past support.

Facing such scrutiny, Gabbard is expected to shift her tone during the hearing. Insiders say she plans to argue that Snowden’s disclosures harmed national security and the intelligence community—a clear departure from her earlier defense of him.

With the Senate Intelligence Committee set to grill her on Thursday, all eyes will be on how Gabbard navigates this thorny issue. It’s a pivotal moment for her confirmation and one that could shape the debate around whistle-blowers and national security for years to come.