Isaac Lanier Avant of Arlington struck a plea deal in federal court in Alexandria Wednesday and was convicted on a single misdemeanor charge of failing to file a tax return. He faces up to a year in prison at sentencing in January.
Avant is chief of staff for Rep. Bennie Thompson, the state’s only congressional Democrat.
In court papers, Avant admitted he had no income tax withheld from his congressional paycheck from 2005 through 2012, despite annual wages exceeding $165,000. He filed no tax return from 2008 through 2013.