Senate Judiciary Chairman Lindsey Graham (R-S.C.) told reporters Wednesday that he would not ask Attorney General Bill Barr to testify before his committee about the Justice Department's decision to reduce the sentencing recommendation for President Trump's associate Roger Stone.

Why it matters: Democrats in the past 24 hours have demanded that the administration provide answers on why the DOJ overruled career officials who had been handling the Stone prosecution, especially after Trump congratulated Barr on Twitter for "taking charge of a case that was totally out of control."

Senate Minority Leader Chuck Schumer (D-N.Y.) sent a letter to the Justice Department inspector general requesting an investigation, writing: "This situation has all the indicia of improper political interference in a criminal prosecution."

Sens. Kamala Harris (D-Calif.) and Richard Blumenthal (D-Conn.) on Wednesday sent letters to Graham demanding that the committee hold a hearing on potential interference.

House Judiciary Chairman Jerry Nadler (D-N.Y.) tweeted Tuesday that his Democratic-led committee "will get to the bottom of this."

What they're saying: "He'll come in as part of oversight, but we're not going to call him based on this," Graham told reporters, adding that it's not appropriate for Trump to be commenting on ongoing cases, per Politico.

Other Republican senators were similarly dismissive: “I think the judge is going to take care of that,” said Sen. Chuck Grassley (R-Iowa).

Context: The Justice Department submitted a new sentencing recommendation for Stone after career prosecutors requested that he serve seven to nine years in prison for obstruction, giving false statements to a House committee and witness tampering.

All four prosecutors who tried Stone in November withdrew from the case, while one resigned from the Justice Department altogether.

This came after Trump tweeted early Tuesday that the recommendation is a "miscarriage of justice" that he "cannot allow," claiming that the "real crimes were on the other side.

Go deeper: Trump pulls nomination for former U.S. attorney for D.C. to Treasury post