Darrell Issa will challenge Duncan Hunter in the House in 2020

Former representative Darrell IssaDarrell's confirmation drama Edward IssaSenate highlights the hypocrisy of the media. The Issa Senate confirmation hearing was delayed due to background check issues. (R-Calif.) Challenge the representative. Duncan HunterDuncan Duane HunterL's confirmation hearing in front of Issa's Senate was delayed due to background check issues Can Carl save the California GOP? The Hill campaign report: Democrats vie for party's future in heated debate (R-Calif.) For his seat in the House of Commons in 2020, according to two sources close to his projects.

Issa is expected to announce his campaign at a press conference in El Cajon, just east of San Diego on Thursday.

Issa previously represented California's 49th district in the House, but announced last year that he would not run for re-election. Democratic Representative Mike Levin won the elections to replace Issa in November.

Issa has however suggested in recent weeks that he could run for Congress again if his appointment to a prominent position in the Trump administration was not approved quickly.

Issa's confirmation was largely blocked in the Senate last week after Sen. Bob MenendezRobert (Bob) MenendezThe Senate confirmation drama highlights the hypocrisy of the media Menendez asks the state to open an investigation into the delays in the aid to Ukraine As NFIP Reauthorization Time Approaches, Congress Must Stop Fatal Subsidies MORE (N.J.), the most democratic member of the Foreign Relations Commission, has expressed concerns about his basic FBI file.

Hunter currently represents the 50th district nearby.

Her political career was disrupted by a federal indictment including campaign financing offenses and wire fraud. His wife pled guilty to similar charges earlier this year, although Hunter has maintained his innocence. His trial is scheduled for January.

Nevertheless, the accusations made Hunter politically vulnerable, even in his deeply conservative district of Southern California. In mid-term elections last year, he won a three-point victory over Democrat Ammar Campa-Najjar.

Campa-Najjar is again a candidate at Hunter's headquarters.

-Olivia Beavers contributed to this report.