Tulsi Gabbard, President Trump's nominee to serve as the director of national intelligence, will testify Thursday morning at a confirmation hearing before the Senate Intelligence Committee. The 43-year-old former Democratic congresswoman from Hawaii and combat veteran would oversee the nation's 18 spy agencies.

President Trump’s choice to serve as the director of national intelligence faced tough questions from senators in both parties.

Trump’s nominee for director of intelligence said, under oath, that she was not aware “until today” that a prominent cleric she met in Syria threatened to unleash suicide bombers in the United States.

If confirmed, former Rep. Tulsi Gabbard would become the youngest-ever DNI. Sources tell ABC News the vote on her nomination is expected to be close.

EXCLUSIVE: Dozens of top former intelligence officials are urging members of the Senate to confirm President Trump’s nominee for Director of National Intelligence Tulsi Gabbard, saying she will “begin undoing the gross politicization that has come to characterize intelligence bureaucracies,

Gabbard had her confirmation hearing on Thursday as senators questioned her on her alliances and controversies.

The onslaught of claims, promises and testy exchanges did not occur in a political vacuum. The whirlwind day — Day 10 of the new White House — all unfolded as Trump himself was ranting about how diversity hiring caused the tragic airplane-and-helicopter crash outside Washington’s Ronald Reagan National Airport.

The GOP-led Senate hasn't yet rejected any of Donald Trump's Cabinet nominees, but Tulsi Gabbard and Robert F. Kennedy Jr. appear to be on shaky ground.

Senate Republicans and their allies believe former Rep. Tulsi Gabbard ’s chances of being confirmed as director of national intelligence will hinge on her performance during her confirmation hearing next week, with several mentioning she has an “uphill battle” in her chances of being confirmed.

WASHINGTON (TNND) — Tulsi Gabbard, President Donald Trump’s nominee to be director of national intelligence, rejected claims by Senate Democrats on Thursday that the president would ask her to violate the law.

One expert says her views are ‘so wildly fringe that her potential appointment as DNI is genuinely alarming’, Richard Hall and Andrew Feinberg write

Watch the Senate Intelligence Committee hearing on President Trump’s nominee for national intelligence Director Tulsi Gabbard