A Republican-led House committee is debating Friday whether high-ranking IRS official Lois Lerner waived her Fifth Amendment rights when she appeared before the committee in May. 

Lerner used to oversee the IRS division that targeted groups for additional scrutiny when they applied for tax-exempt status. At a May 22 hearing, she invoked her right not to answer lawmakers' questions after declaring in an opening statement that she had done nothing wrong.