“Building a massive $ 200 billion worth of sea wall around New York City to protect it from rare storms is an expensive, silly, and environmentally unacceptable idea that won't work if necessary,” he wrote on Twitter.

A massive 200 Billion Dollar Sea Wall, built around New York to protect it from rare storms, is a costly, foolish & environmentally unfriendly idea that, when needed, probably won't work anyway. It will also look terrible. Sorry, you'll just have to get your mops & buckets ready!

- Donald J. Trump (@realDonaldTrump) January 18, 2020

The American leader in a joking manner advised residents of the city "to keep mops and buckets ready."

Earlier, The Washington Post reported that Trump intends to allocate an additional $ 7.2 billion from the Pentagon to build new barriers on the border with Mexico.