No. A single cold snap in the US can’t disprove global warming any more than a record heat wave in Australia can prove that it’s happening.
Global warming refers to the rise in the average temperature of the Earth’s climate system. The Earth is a big place. It can be cold in one part and warm in another. The relevant metric here is the long-term trends for the whole planet.
It’s also worth noting that global warming won’t abolish cold weather — at least not anytime soon. Many climate models suggest we’ll still see record cold snaps in the United States as the planet heats up. They’ll just become less frequent over time — while record heat waves will become increasingly common. Like so:
Record high and record low temperatures set in the US each decade:
That’s a picture of a nation that’s clearly getting warmer and warmer overall — but still experiences plenty of cold.