Maine's Republican senator plans to question both during separate hearings scheduled for Thursday morning, and she is seen as a possible swing vote.

While the Senate Finance Committee will vote Tuesday on whether to advance the nomination of RFK Jr. for HHS Secretary, Sen. Susan Collins has indicated she will vote for Tulsi Gabbard for director of national intelligence.

Republicans and Democrats on the Senate Intelligence Committee grilled Gabbard on her foreign policy positions and her views about Edward Snowden.