Senate Democrats are taking to the Senate floor to read Coretta Scott King's letter after Sen. Elizabeth WarrenElizabeth Ann WarrenDem senators demand Trump explain ties to Koch brothers 'Fearless Girl' statue to be moved away from Wall Street bull Sanders, Warren, O’Rourke inspire patriotic small donor waves MORE (D-Mass.) was temporarily banned from speaking.  

 
"The idea that a letter and a statement made by Coretta Scott King, the widow of Martin Luther King Jr. ... could not be presented and spoken about here on the floor of the Senate is, to me, incomprehensible," he said from the Senate floor. 

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Sanders read the entirety of the letter including a portion — which got Warren in hot water on Tuesday night — that alleged Sessions "has used the awesome power of his office to chill the free exercise of the vote by black citizens." 

Sanders — who missed Tuesday night's vote — defended Warren, arguing that she brought "forth a statement made by one of the heroines, one of the great leaders of the civil rights movement of the United States of America."  

Sanders' speech comes after Sen. Tom UdallThomas (Tom) Stewart UdallDem senators demand Trump explain ties to Koch brothers Dem senators unveil expanded public option for health insurance Overnight Energy: Watchdogs unveil findings on EPA, Interior controversies | GAO says EPA violated law with soundproof booth | IG says Zinke could have avoided charter flight | GOP chair probes Pruitt's four email addresses MORE (D-N.M.) read the letter from the Senate floor earlier Wednesday. Sen. Sherrod BrownSherrod Campbell BrownOvernight Finance: Senate repeals auto-lending guidance, shattering precedent with vote | House passes IRS reform bills | Senate GOP fears tax cut sequel Dem Senator open to bid from the left in 2020 GOP Senate hopefuls race to catch up with Dems MORE (D-Ohio) also read the letter, and Sen. Jeff MerkleyJeffrey (Jeff) Alan MerkleyOvernight Energy: Senate confirms Bridenstine as NASA chief | Watchdog probes Pruitt’s use of security detail | Emails shine light on EPA science policy changes 32 male senators back Senate women's calls to change harassment rules Duckworth brings her baby to Senate vote, drawing a crowd MORE (D-Ore.) read parts of it on Tuesday night. 

"It's a sad day for our democracy ... when the words of Coretta Scott King are not allowed on the floor of the U.S. Senate," Brown said.

Sen. Sheldon WhitehouseSheldon WhitehouseDem senators demand Trump explain ties to Koch brothers Overnight Energy: Senate confirms Bridenstine as NASA chief | Watchdog probes Pruitt’s use of security detail | Emails shine light on EPA science policy changes EPA inspector general to probe Pruitt's use of taxpayer-funded security detail on trips to Disneyland, Rose Bowl game MORE (D-R.I.) had tried to include the letter in the record on Tuesday night but was blocked by Sen. James Risch (R-Idaho). 

Warren thanked both Brown and Udall on Twitter for their support. 

Senate Majority Leader Mitch McConnell (R-Ky.) interrupted Warren on Tuesday night and said that she had violated Senate rules by impugning her colleague, Sessions, President Trump's pick for attorney general.

Senate Republicans voted to rebuke Warren, and she is barred from speaking on the Senate floor through Wednesday evening, when lawmakers will wrap up the debate on Sessions' nomination.

A progressive outside group blasted Republicans as being "sexist" for allowing the male Democratic senators to read part of the letter but not Warren. 

“It is unbelievably hypocritical and sexist for Mitch McConnellAddison (Mitch) Mitchell McConnellRepublicans divided over legislation protecting Mueller The Hill's Morning Report: Inside the Comey memos Democrats mull audacious play to block Pompeo MORE to silence Sen. Warren citing the words of a civil rights hero, but allow her male colleagues to speak the very same words without objection," said  Kait Sweeney, a spokeswoman for the Progressive Change Campaign Committee. 

- Updated at 1:52 p.m.