California Republican Rep. Darrell Issa will not run for a 10th term in Congress.
The former chairman of the House Oversight Committee narrowly won re-election in 2016 and was widely considered the most vulnerable incumbent in the House going into the 2018 election.
The richest man in Congress, Issa had already drawn a handful of well-funded opponents.
"Throughout my service, I worked hard and never lost sight of the people our government is supposed to serve. Yet with the support of my family, I have decided that I will not seek reelection in California's 49th District," Issa said in a statement.
"I am forever grateful to the people of San Diego, Orange and Riverside counties for their support and affording me the honor of serving them all these years. Most humbling for me _ and for anyone who represents this area _ has been the special privilege of representing the Marines and sailors of Camp Pendleton and their families. On countless occasions, and in every corner of the world I met them, I was inspired by their bravery and humbled by their sacrifice to keep us all safe from harm. Representing you has been the privilege of a lifetime."
