The Republican-controlled House will vote next month on whether to hold Lois Lerner in contempt for her role in the IRS targeting of conservative groups “unless she agrees to testify” before then, Majority Leader Eric Cantor said in a memo to colleagues on Friday.

In the memo outlining the House’s spring agenda, Cantor noted that House Oversight and Government Reform Committee had recommended that Lerner be held in contempt for refusing to answer questions on the scandal “after initially testifying under subpoena.”

The Virginia Republican noted that “thorough investigations” by the oversight panel and the House Ways and Means Committee found that Lerner “played a central role in the illegal targeting of conservative groups by the IRS.”

Ways and Means also referred “evidence of criminal violations” by Lerner to Attorney General Eric Holder, Cantor said in the memo.

He said that Lerner could stop the contempt vote if she testified before the oversight committee.

Lerner was head of the department that evaluated applications for tax-exempt status sought by nonprofit organizations. Her department was found to have singled out tea party, conservative, and religious groups for specialized screening that often involved unusual delays and detailed requests for information.

Read More: