Washington (CNN) Democratic Sen. Kirsten Gillibrand of New York knocked the GOP's handling of accusations against Supreme Court nominee Brett Kavanaugh, saying Wednesday that the scheduled hearing for Monday would be a "sham."

"They are trying to create a sham hearing on Monday," Gillibrand told CNN's Jim Acosta on "The Situation Room."

Gillibrand said that without first deferring to an FBI investigation into the allegations of sexual assault brought by Christine Blasey Ford against Kavanaugh and requesting corroborating witnesses to testify, the Senate Judiciary Committee's approach would amount to a "he said-she said" that was unfair to Ford.

In a letter from her attorneys on Tuesday, Ford called for an FBI investigation into her allegations before she would testify to Congress. Kavanaugh had said on Monday that he would be willing to speak with lawmakers to refute the allegations, and President Donald Trump has downplayed the notion of having the FBI look into the matter.

Senate Judiciary Chairman Chuck Grassley of Iowa has said he does not believe an FBI investigation would be appropriate.

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