Core Viewpoint - The article discusses the economic impact of tax cuts and market optimism during Trump's presidency, as presented by economist Larry Kudlow, who attributes significant growth in GDP and business investment to these policies [1][2]. Group 1: Economic Growth Indicators - U.S. GDP grew by 3.8% in the second quarter of Trump's presidency, a notable recovery from a -0.6% decline in the previous quarter, which Kudlow interprets as evidence of the effectiveness of Trump's tax bill [1]. - Business investment saw an increase of 8.5%, which Kudlow attributes to the tax bill allowing immediate write-offs for new machinery and computers [2]. - There was a 16% rise in new business startups, a statistic sourced from the St. Louis Federal Reserve, indicating a surge in entrepreneurial activity [2]. Group 2: Stock Market Performance - The S&P 500 index increased by 32% and the Nasdaq by 46% since early April, which Kudlow uses as further evidence of economic confidence and investment [2]. Group 3: Critique of Claims - The tax bill was not signed until after the second quarter ended, suggesting that businesses could not have anticipated its effects when making spending decisions [4]. - Kudlow's reference to a GDP deflator of 2.1% as an indicator of inflation is challenged, as it does not reflect the actual cost of living experienced by consumers, who are more affected by the Consumer Price Index (CPI) or Personal Consumption Expenditures (PCE) [5].