By Jamie Ross and Izin Akhabau

Listen to this briefing

Good morning. It’s Wednesday, Oct. 14, and we don’t think Shane Gillis reads The 7. But, if you’re out there Shane, please do not look at the aerobics outfits of the ’80s. Let’s catch up.

	The investigation of Rep. Ilhan Omar may focus on immigration paperwork.

• The latest: The federal probe centers on claims she or her late father may have lied on decades-old papers, people familiar say. Omar, a Minnesota Democrat, denies such allegations.

• Omar’s D.C. home was searched this week: It was an extremely unusual move. Federal agents have historically avoided taking public action involving politicians so close to an election.

Senate candidates in three battleground states clashed in debates last night.

• In the liveliest event: Democratic Sen. Jon Ossoff and Republican Rep. Mike Collins traded harsh attacks in Georgia. There was a lot of talk about Jeffrey Epstein and neo-Nazis.

• Elsewhere: Debates were held in competitive states Maine and Iowa.

• Meanwhile: President Donald Trump made a 3,400-mile trip to Alaska. The visit shows how urgently the Republican Party needs to mobilize its base to keep control of the Senate.

The White House is scrambling to answer questions about Trump’s new press secretary.

• Yesterday: Katie Zacharia made a sometimes-stumbling debut in the briefing room, taking just three questions. Her performance received mixed reviews inside the White House.

• Zacharia calls herself a lawyer: But her legal credentials are under question. The Post conducted a review and could not find any active or expired bar admissions under her name.

Pope Leo was found to have lung cancer during surgery, the Vatican said.

• Yesterday: Doctors discovered “pulmonary adenocarcinoma,” prompting them to remove a portion of Leo’s right lung. Officials said the surgery was “successfully completed.”

• What is pulmonary adenocarcinoma? It is among the most common types of lung cancer and is usually treatable if caught early. Experts told The Post how to spot and prevent it.

The Reflecting Pool liner failed due to flawed renovation work, an inspection found.

• This summer: The blue coating applied to the bottom of the pool failed in at least 85 places because of errors in the work, according to an inspection report obtained by The Post.

• Trump blamed the damage on vandals: But the report makes no mention of vandalism to the liner. It attributed the problems to improper materials and a rush to complete the job.

A leading knee expert revealed his workout routine for strong knees.

• All this week: The Post is sharing advice on how to care for your knees. So far, we’ve covered why knees are surprisingly resilient and the biggest mistake people with knee pain make.

• Today: Orthopedic surgeon Howard Luks shares seven simple exercises he does at the gym, including squats, wall sits and step-ups. You can see him demonstrate each move.

Post food critic Elazar Sontag ranked the 40 best restaurants in the D.C. area.