Arthur Laffer is an American economist who is best known for his work on supply-side economics and his development of the Laffer curve, which demonstrates the relationship between tax rates and government revenue. Laffer is a prominent figure in the field of economics and has served as an advisor to several US presidents, including Ronald Reagan. He is known for his advocacy of free market principles and his belief that lower tax rates can stimulate economic growth. Laffer has also been a vocal critic of government intervention in the economy and has argued that many government policies, such as high tax rates and excessive regulation, can have a negative impact on economic growth and prosperity.