Bees are not native to north or south America. They were brought here by the Europeans. There are plenty of insects that pollinate plants such as wasps, moths, butterflies, flies, beetles...... Wasps pollinate and destroy aphids.
20,000 species of bees in the world and 4,000 of those are native to the US and like you said the European honey bee isn’t one of them.
And they greatly enhance the yield of crops, most of which are also not native to North or South America. And North American bee husbandry is greatly superior to that of Europe. And wasps, butterflies, flies, Beatles, do not make honey or wax, although you never know what George Harrison and Ringo Starr may get up to. Finally, if bees are dying for lack of water, so are wasps.