The Los Angeles Times reported Tuesday afternoon that Lois Lerner, who heads up the Internal Revenue Service's tax-exempt division, plans to invoke the Fifth Amendment to the U.S. Constitution in a hearing Wednesday before the House Committee on Oversight and Government Affairs.

The Fifth Amendment provides that U.S. citizens may not be compelled to offer testimony if telling the truth would incriminate them.

Lerner's defense lawyer, William W. Taylor III, wrote to the committee on Tuesday that his client would refuse to answer questions related to what she knew about the extra levels of scrutiny applied to conservative nonprofit organizations that applied for tax-exempt status beginning in 2010.