There have been three major tax cuts in the modern US history: 1) the Tax Cuts and Jobs Act of 2017; 2) the Economic Growth and Tax Relief Reconciliation Act of 2001; and 3) the Economic Recovery Act of 1981. Each of the first two major tax cuts had increased the federal debt. Just about everybody agrees that US federal debt is on an unsustainable path. Can we afford another major tax cut without trigging a major economic disaster such as the Great Recession of 2007-2009? This article discusses an overview of this new law, the impact of the first two major tax cuts on the federal debt, the impact of the Tax Cuts and Job Acts on the US government debt, and its consequences.