Last week's ceremony was officiated by former Vice President Kamala Harris, who swore Garcia in as mayor of Long Beach in 2014.
Garcia was elected to serve as the Ranking Member and top Democrat of the House Oversight and Government Reform Committee in June.
"It's a lead investigative role of the Congress," said Garcia. "Our committee leads investigations in a time where corruption in government is at an all-time high."
Garcia is largely referring to President Donald Trump, who has accepted gifts from foreign governments like a luxury airplane, and has made untold millions - or even billions - from unknown sources while in office from his multiple crypto ventures.
Plus, there's the high-profile redistricting fight happening in California and Texas.
Texas Gov. Greg Abbott on Saturday promised to quickly sign off on a new, Republican-leaning congressional voting map gerrymandered to help the GOP maintain its slim majority in Congress.
Meanwhile, Gov. Gavin Newsom has approved a special election to take place in November for residents to vote on a redrawn congressional map designed to help Democrats win five more House seats next year.
"California is going to redistrict because we have to," said Garcia. "Now that Texas is essentially, in my opinion, trying to rig the 2026 election, California's got to fight back just as hard."