Richardson was the Republican nominee for the U.S. House of Representatives in Oklahoma's Second Congressional District in 1978 and 1980, both times losing to Democrat Mike Synar.

Attorneys for the two other Federal Districts in Oklahoma, Richardson was involved in the prosecution and conviction of 210 County Commissioners who were engaged in a systematic kickback scheme that had been going on for decades.

[3] In 1991 Richardson represented former McLennan County, Texas District Attorney Vic Feazell in a defamation case against Dallas TV station WFAA which resulted in what at that time was the largest libel judgement in U.S.

The ad referenced the June 2015 death of Bob Barry Jr., a longtime sports anchor at Oklahoma City NBC affiliate KFOR-TV (channel 4) from 1982 until shortly before his death, in an accident in which his motor scooter collided into a car being driven by Gustavo Gutierrez – an undocumented Mexican immigrant who had thrice been deported from the U.S. prior to the accident – who was conducting an illegal U-turn across two southbound lanes at a northwest Oklahoma City intersection.

[... W]e find it very troubling that Mr. Richardson ran an advertisement that could imply that the Barry family endorses in any way his election as Governor of the State of Oklahoma.