The top Democrat on the Senate Judiciary Committee wants to see the White House's directive to the FBI ordering the reopening of its investigation into Supreme Court nominee Brett Kavanaugh.

"Given the seriousness of the allegations before the Senate, I am writing to request that you provide the Senate Judiciary Committee with a copy of the written directive sent by the White House to the FBI," ranking member Dianne Feinstein, D-Calif., wrote Sunday to White House counsel Don McGahn and FBI Director Christopher Wray.

"In addition, if the FBI requests any expansion beyond the initial directive, please provide the names of any additional witnesses or evidence," Feinstein continued.

Reacting to Democrats complaining about the reported limited scope of the inquiry, Trump indignantly tweeted Sunday afternoon that, "Hello! For them, it will never be enough — stay tuned and watch!"

The FBI has up to a week to complete a supplemental background probe into the sexual misconduct accusations made against Kavanaugh before the full Senate considers his confirmation for the country's highest court. The inquiry is part of a deal made last Friday in exchange for Sen. Jeff Flake, R-Ariz., and other Republicans being comfortable with moving ahead with the judge's nomination.

The bureau has reportedly targeted at least four people to question. Three of those people are tied to Christine Blasey Ford's claim Kavanaugh sexually assaulted her in the 1980s when they were in high school. Mark Judge, Leland Keyser, and P.J. Smyth were allegedly at the party in Maryland where Ford's attack occurred. Ford told the Senate Judiciary Committee last week she was able to escape from underneath Kavanaugh's bodyweight when Judge jumped on the bed they were on.

The fourth person of interest to the FBI is Deborah Ramirez, the woman who has accused the judge of thrusting his penis in her face at a party during his freshman year at Yale University. The FBI has reportedly already contacted her.

Kavanaugh has denied all the claims.