Holder urges Justice Dept, FBI officials to 'be strong' in face of attacks: 'It will get worse'
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Former Attorney General Eric HolderEric Himpton HolderThe American experience is incomplete without its neighbor – The argument for Americanism Eric Holder: Trump administration has 'brought shame to the nation’ with family separations US law is not on the side of Mueller's appointment as special counsel MORE (D) urged officials at the Department of Justice (DOJ) and the FBI to "be strong" in the face of attacks.

"I said about 8 months ago that the actions and integrity of the men & women at DOJ/FBI would be unfairly questioned. It’s happening," Holder tweeted Sunday.

"And it will get worse. Be prepared, be strong. You have the support of millions committed to truth, justice and the defense of this nation."

His comments come after Attorney General Jeff SessionsJefferson (Jeff) Beauregard Sessions'Occupy ICE' protests emerge across the country Prosecutor warned border authorities office is ‘diverting’ DOJ resources from other cases: report There's room in America for domestic violence victims MORE on Friday fired FBI Deputy Director Andrew McCabeAndrew George McCabeTop House Dem claims Judiciary chairman's DOJ, FBI subpoena is invalid Hillicon Valley: New FTC chief eyes shake up of tech regulation | Lawmakers target Google, Huawei partnership | Microsoft employees voice anger over ICE contract Senate Intel requests more testimony from Comey, McCabe MORE, after an internal FBI office found that McCabe wasn't forthcoming during a review by the Justice Department's inspector general.

McCabe defended himself after his firing, calling his dismissal an attempt to undermine special counsel Robert MuellerRobert Swan MuellerSasse: US should applaud choice of Mueller to lead Russia probe MORE's probe into Russia's election interference and possible ties between the Trump campaign and Russia.

President TrumpDonald John TrumpGOP lawmakers preparing to vote on bill allowing migrant children to be detained longer than 20 days: report Wasserman Schultz: Infants separated from their parents are in Florida immigrant shelters Ex-White House ethics chief: Sarah Sanders tweet violates ethics laws MORE then sent out a series of tweets attacking McCabe, his former boss and former FBI Director James ComeyJames Brien ComeyGrassley wants to subpoena Comey, Lynch after critical IG report The media just can't stop lying about Trump The Hill's 12:30 Report — Sponsored by Delta Air Lines – First lady makes surprise visit to migrant children at border MORE and Robert Mueller, the special counsel in charge of the investigation into Russian interference. He also said McCabe's firing proved "there was tremendous leaking, lying and corruption at the highest levels of the FBI, Justice & State."

McCabe had long been on the receiving end of criticism from congressional Republicans and Trump. Trump touted his firing early Saturday, calling it a "great day for democracy."

On Saturday, Trump reiterated his claim that there was no collusion between his campaign and Russia.

He said the Mueller probe should "never have been started in that there was no collusion and there was no crime."

Holder on Saturday ripped the Trump administration for firing McCabe, calling the timing of the dismissal "cruel."