America is a food exporter (except for luxury crops, such as out of season fruits). Thus there is no danger of a food shortage in America (absent something catastrophic such as a nuclear war). There can be distribution issues (often caused by unwise government policies), but they work themselves out. The worst that happens in the US is higher prices (since there is a global market and shortages elsewhere result in higher global prices).
Eretz Yisrael does rely somewhat on imported foods, and along with the rest of the Middle East, will have shortages (meaning higher prices) due to the disruption of food exports from Russia and Ukraine. Thus American farmers instead of selling wheat to an frum bakery in Brooklyn for “X” dollars, will sell it to a bakery in Israel for “X+Y” dollars, which will give “Y” dollars of extra happiness to the American farmer.