Following mismanagement of the Superfund program, Assistant Administrator Rita Lavelle was fired by Reagan in February 1983. Lavelle was later convicted of perjury. Gorsuch had increasing confrontations with Congress over Superfund and other programs, including her refusal to submit subpoeaned documents. Gorsuch (who had recently remarried, becoming Anne Gorsuch Burford) resigned in March 1983, followed by resignations of most of her other Assistant Administrators. ("See" Fiscal mismanagement, 1983.) Reagan then appointed William Ruckelshaus as EPA Administrator for a second term. Lee M. Thomas succeeded Ruckelshaus as Administrator in 1985.