Complex sentence: For example, in the USA, cane sugar has been replaced with cheap corn syrup, making high-sugar food less expensive; beet and cane sugar in the are subject to subsidies and price controls that result in artifically high prices.
Split into simpler sentences: For example, cane sugar has been replaced with cheap corn syrup, making high-sugar food less expensive. However, it should be noted that beet and cane sugar in the U.S. is a beneficiary of subsidies and price controls that result in artifically high prices.