2020 presidential hopeful Sen. Kamala Harris (D-Calif.) on Sunday hit President Trump for his tweet on proposed July Fourth plans at the National Mall this year.

“I think the President needs to realize it’s America’s birthday, not his birthday,” she said Sunday while at a campaign event in Iowa.

Here’s @KamalaHarris’ response to my question in her Iowa press gaggle to @realDonaldTrump’s tweet announcing a parade & fireworks July 4 in DC. She smiled widely, laughed and said, “I think the President needs to realize it’s America’s birthday, not his birthday.” #2020Elections https://t.co/zKgB4Dn0ls

— Kyung Lah (@KyungLahCNN) February 24, 2019

Trump on Sunday urged Americans to “hold the date” on Independence Day — which is already a federal holiday — for “one of the biggest gatherings in the history of Washington, D.C.”

{mosads}”It will be called ‘A Salute To America’ and will be held at the Lincoln Memorial,” Trump tweeted. “Major fireworks display, entertainment and an address by your favorite President, me!”

The nation’s capital already has a range of annual festivities on the Fourth of July, including a fireworks show at the National Mall, a free concert and a parade down Constitution Avenue.

Trump first floated the idea for a Fourth of July celebration earlier this month when he brought it up during a Cabinet meeting. It is unclear how Trump’s proposed idea would coexist with the existing D.C. Fourth of July celebrations.

Harris joined a number of Democratic lawmakers who poked fun at Trump’s proposal on Sunday, noting that the nation’s capital already holds a number of Independence Day events.

“If this goes well, I think we should follow it with a big party in Times Square the night before New Year’s Day,” Rep. Eric Swalwell (D-Calif.), who is said to be mulling a 2020 presidential bid, tweeted.