President Barack Obama insists that Americans have to take climate change seriously, or else a key part of one the world’s greatest cities could end up underwater.

“When scientists tell us that the planet is getting warmer and we need to do something about it, the majority of people think that’s a good idea, let’s do something about that, because we don’t want Manhattan to be underwater,” Obama said during a fundraiser in New York City.

Obama observed that people are frustrated by the current presidential election campaign.

“The bad news is that our politics has been a little screwed up lately,” he said, pointing to the Republican party’s nomination process.

But he urged his donors to help the Democratic party organize against Trump.

“We got to get busy and we got to organize, and we got to work,” he said. “And the only way we do that effectively is when we have support from folks like you.”