Question: What administration did Mark Everson work for after American statesman and actor Ronald Reagan left office?

Context articles: Craig Shirley
Ronald Reagan
Ronald Reagan Trail
Lowell Park (novel)
California gubernatorial election, 1974
An American Life
Speeches and debates of Ronald Reagan
Stop the Madness
California gubernatorial election, 1966
Mark Everson

Craig Shirley (born September 24, 1956) is an American author, lecturer, historian and public affairs consultant.
 He has written four bestsellers on Ronald Reagan: "Rendezvous with Destiny: Ronald Reagan and the Campaign that Changed America" (2014), "Reagan's Revolution: The Untold Story of the Campaign That Started It All" (2005), and "Last Act: The Final Years and Emerging Legacy of Ronald Reagan" (2015), and "Reagan Rising: The Decisive Years, 1976-1980" (2017).
Ronald Wilson Reagan ( ; February 6, 1911 – June 5, 2004) was an American statesman and actor who served as the 40th President of the United States from 1981 to 1989.
 Before his presidency, he was the 33rd Governor of California, from 1967 to 1975, after a career as a Hollywood actor and union leader.
The Ronald Reagan Trail is a collection of highways in central Illinois that connect villages and cities that were of importance to former United States President Ronald Reagan.
 The trail was established in 1999 by the state of Illinois' General Assembly, five years prior to former President Reagan's death in June 2004.
 The Reagan Trail was the brainchild of the late mayor of Eureka, Illinois Joe Serangeli.
 A volunteer-run Reagan Trail Association maintained a web presence and promoted the trail for its initial years, but the board was dissolved in July 2016 and website transferred to the care of the Ronald W. Reagan Society of Eureka College.
Set in 1990, Jenny Brix lives in Iowa City.
 She is a history buff.
 She even has a Ronald Reagan picture when he was in his 20s as a lifeguard!
 When she goes to a meeting, a very old professor has a heart attack.
 Panicking, she uses CPR on him, thus saving his life.
 After a few stops to the hospital, he asks her which US president she likes best.
 She answers Ronald Reagan.
 So then the professor tells her that she can go back in time and meet him.
 She is shocked, but the professor keeps telling her it's true.
 She finally believes him, sort of.
 The professor takes her to Dixon, Illinois, Reagan's childhood home.
 There the professor tells her she has 80 hours to stay out of the timezone, or her body will be used to the other timezones and can't come back to present day (1990).
 When she goes into the time machine, it actually is set on 1832, instead of 1932 (where she was going).
 She then meets Abraham Lincoln (who develops a little crush on her), and Chief Black Hawk during the Black Hawk War.
 After all of that is straightened out, she goes to 1932 with less than half the time left she started with.
 Once she gets there she sees a young, handsome Ronald Reagan going past her to save a person from drowning.
 She then gets some friends, Scooter and Betsy.
 They say there is a dance at Dixon's run down, old high school.
 There she dances with Ronald and his brother.
 While dancing with Ronald, she falls down the steps with him.
 They then get a crush on each other.
 After going on a few dates, she has to go to her original timezone.
 She and Ronald have a sad exchange (Ronald doesn't know about the time traveling) when she has to leave.
 Jenny then takes Scooter and Betsy to Lowell Park, where she shows them the time machine.
 She then leaves, leaving the others dumbfounded.
 When she comes back, professor says he is Scooter, and spent the rest of his life finding things about the time machine after she left until he finally made the time machine.
The 1974 California gubernatorial election took place on November 5, 1974.
 The primary elections occurred on June 4, 1974.
 Incumbent Governor and former actor Ronald Reagan was retiring after two terms.
 Democratic Secretary of State Jerry Brown, son of former Governor Pat Brown, defeated Republican Controller Houston I. Flournoy in the general election.
An American Life is the 1990 autobiography of former American President Ronald Reagan, ghostwritten by Robert Lindsey.
 Released almost two years after Reagan left office, the book reached number eight on "The New York Times Best Seller list".
The speeches and debates of Ronald Reagan comprise the seminal oratory of the 40th President of the United States.
 Reagan began his career in Iowa as a radio broadcaster.
 In 1937, he moved to Los Angeles where he started acting, first in films and later television.
 After delivering a stirring speech in support of Barry Goldwater's presidential candidacy in 1964, he was persuaded to seek the California governorship, winning two years later and again in 1970.
 In 1980 as the Republican candidate for president of the United States, he defeated incumbent Jimmy Carter.
 He was reelected in a landslide in 1984, proclaiming that it was "Morning in America".
 Reagan left office in 1989.
"Stop the Madness" is an anti-drug music video uniquely endorsed and supported by United States President Ronald Reagan and the Reagan administration in 1985.
 The video includes Claudia Wells, New Edition, La Toya Jackson, Whitney Houston, David Hasselhoff, Kareem Abdul-Jabbar, Kim Fields, Herb Alpert, Arnold Schwarzenegger, Darrell Creswell, Tim Feehan, Casey Kasem and Boogaloo Shrimp from the "Breakin'" franchise.
 Perhaps the main star of the video was Ronald Reagan's wife, Nancy Reagan, whose main cause as First Lady was speaking out against drugs, and forming the "Just Say No" anti-drug association.
 Mrs. Reagan appeared twice in "Stop the Madness".
The California gubernatorial election, 1966 was held on November 8, 1966.
 The election was a contest between incumbent Governor Pat Brown, the Democratic candidate, and actor Ronald Reagan, the Republican candidate.
 Reagan mobilized conservative voters and defeated Brown.
Mark Whitty Everson (born September 10, 1954) is an American politician who is currently the Vice Chairman of alliantgroup and served as the 46th Commissioner of Internal Revenue from 2003 until 2007.
 Prior to his appointment as Commissioner of the IRS, Everson held a number of federal government positions in the administrations of George W. Bush and Ronald Reagan, as well as at the state level within the administration of Indiana Governor Mitch Daniels.