Former President George W. Bush, the only living Republican ex-president, extended congratulations to President-elect Joe Biden.
The couple privately visited the Los Angeles National Cemetery on Sunday.
She shared the news via her Instagram Stories over the weekend.
Winner Burt Thakur praised Trebek for helping him learn English in an emotional moment.
Jennings holds the record for longest 'Jeopardy!' winning streak.
The royals stepped out for the somber occasion on Sunday in Central London.
The game show host was battling stage four pancreatic cancer.
The 'Jeopardy' host went public with his cancer diagnosis in March 2019.
The outspoken comic once again led the first episode following a contentious presidential election.
The President-elect pledged to heal the divided nation after his win.
The couple took to the West Hollywood streets to celebrate Biden and Kamala Harris' projected win.
The Vice President-elect said she 'will not be the last' woman to be elected as VP as she makes history.
The CNN journalist was in tears as he spoke about what Biden's win meant for him and many Americans.
The former royal served in the military for 10 years.