Homeland Security Secretary Kirstjen Nielsen Kirstjen Michele NielsenDHS IG won't investigate after watchdog said Wolf, Cuccinelli appointments violated law Appeals court sides with Trump over drawdown of immigrant protections Democrats smell blood with new DHS whistleblower complaint MORE will testify before a congressional committee early next month.

Rep. Mike Rogers Michael (Mike) Dennis RogersDemocrats slam DHS chief for defying subpoena for testimony on worldwide threats Remembering 9/11 as we evaluate today's emerging threats Hillicon Valley: Tech CEOs brace for House grilling | Senate GOP faces backlash over election funds | Twitter limits Trump Jr.'s account MORE (R-Ala.), the ranking member of the House Homeland Security Committee, said in a statement that Nielsen will appear before the committee on March 6.

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The announcement comes after the committee’s chairman, Rep. Bennie Thompson Bennie Gordon ThompsonHouse panel pans ICE detention medical care, oversight Senate to hold nomination hearing for Wolf next week Hillicon Valley: FBI chief says Russia is trying to interfere in election to undermine Biden | Treasury Dept. sanctions Iranian government-backed hackers MORE (D-Miss.), was highly critical of Nielsen for not agreeing to testify before the committee earlier and floated the idea of issuing a subpoena for her appearance.

“The administration’s plans about the future of border security are vitally important and the American public deserves to hear about these plans from Secretary Nielsen herself,” Rogers said in a statement Monday.

“Chairman Thompson’s decision to cooperate with Secretary Nielsen to find a time for her to testify was the right one and is consistent with the committee’s constitutional mandate to conduct oversight over [the Department of Homeland Security],” he continued.

Thompson later confirmed the secretary's appearance in a statement to The Hill, saying that the committee is "giving the secretary ample time to prepare for this appearance."

"She should be ready to defend the Administration’s border security actions and its plans to improve its border security agenda going forward," he said.

Thompson told reporters last week that he was open to issuing a subpoena for Nielsen if she didn’t reach a deal to appear before his committee by the end of February.

He had initially requested that the secretary testify on Feb. 6, as lawmakers negotiate a funding package that includes border security measures.

Thompson has pointed to Nielsen's testimony as playing an important role in those negotiations, saying that Congress needs to hear from the Homeland Security chief about the situation at the border.

Trump had initially refused to sign any funding deal that didn't include $5.7 billion for his long-promised wall on the southern border. But he signed a bill last month to temporarily reopen the government, giving lawmakers a three weeklong window to negotiate on border security.

Updated at 12:33 p.m.