American Enterprise Institute

Hassett joined AEI as a resident scholar in 1997. He worked on tax policy, fiscal policy, energy issues, and investing in the stock market. He collaborated with R. Glenn Hubbard on work on the budget surplus, income inequality, and tax reform. Hassett published papers and articles on capital taxation, the consistency of tax policy, returns on energy conservation investments, corporate taxation, telecommunications competition, the effects of taxation on wages, dividend taxation, and carbon taxes.^[11]

In 2003, Hassett was named director of economic policy studies at AEI. Hassett wrote columns in newspapers like The New York Times, The Washington Post, and The Wall Street Journal. He writes a monthly column for National Review and, since 2005, a weekly column for Bloomberg.^[12]

In 2007, Hassett argued that the United States was on the wrong side of the Laffer curve in terms of corporate tax rates. Economists and commentators characterized a graph that he used to support his argument as deceptive.^{[13][14][15][16]}

Dow 36,000

Hassett is coauthor with James K. Glassman of Dow 36,000: The New Strategy for Profiting from the Coming Rise in the Stock Market. It was published in 1999 before the dot-com bubble burst. The book's title was based on a calculation that, in the absence of the equity premium, stock prices would be approximately four times as high as they actually were. In its introduction, Glassman and Hassett wrote that the book "will convince you of the single most important fact about stocks at the dawn of the twenty-first century: They are cheap... If you are worried about missing the market's big move upward, you will discover that it is not too late. Stocks are now in the midst of a one-time-only rise to much higher ground–to the neighborhood of 36,000 on the Dow Jones industrial average."^[17] The Dow Jones Industrial Average closed at 10,273.00 on the day of the book's publication on October 1, 1999,^[18] peaked at 11,722.98 105 days later,^[19] then declined 37.8% through October 9, 2002.^[20]

Paul Krugman argued on his faculty website that the book contained basic arithmetic errors and was "a very silly book" but regarded Hassett's role as co-author as a "youthful indiscretion."^[21] Statistician and blogger Nate Silver described the book as "charlatanic" and suggested on empirical grounds that the authors had failed to notice that at the time of writing stock prices were "as overvalued as at literally any time in American history".^[22]

Views on immigration

According to The New York Times, Hassett's nomination by Trump to lead the Council of Economic Advisers was met with opposition by some anti-immigration groups such as Breitbart News, American Renaissance, the Center for Immigration Studies.^[23] Hassett—"like most economists ... believes that immigration spurs economic growth."Prior to Hassett's nomination, President Trump "broke with recent tradition and removed the council's chairman from a cabinet-level position".^[23]

Chair of White House Council of Economic Advisors

On September 5, 2018, Hassett released new analysis indicating that real wage growth under Trump was higher than reported, despite figures indicating that wage growth had not picked up.^[24]

On September 13, 2018, on an official visit to Ireland, when questioned if the U.S. considered Ireland as a tax haven, said that: "It's not Ireland's fault US tax law was written by someone on acid". Hassett had labeled Ireland as a tax haven on several interviews in August–December 2017, when advocating for the Tax Cuts and Jobs Act of 2017 ("TCJA").^[25] In July 2018, Seamus Coffey, Chairperson of the Irish Fiscal Advisory Council and author of the Irish State's 2016 review of the Irish corporate tax code posted that Ireland could now see a "boom" in the onshoring of U.S. intellectual property, via the Irish Capital Allowances for Intangible Assets (CAIA) BEPS tool which is enhanced by Hassett's TCJA legislation.^[26] In February 2019, Brad Setser from the Council on Foreign Relations, wrote a New York Times article highlighting the failings of Hassett's TCJA in addressing the use of tax havens by U.S. corporates and why the TCJA incentivized U.S. corporate use of tax havens.^[27]

On June 2, 2019, it was announced that Hassett would be stepping down from his role within the coming weeks.^[6]

Return to the Trump administration

On March 20, 2020, it was announced that Hassett will be returning to the White House on a temporary basis to advise President Trump on economic policy amid the COVID-19 pandemic.^[28][29][30] On April 15, 2020, the Trump administration announced Hassett's appointment as a senior advisor.^[31] Hassett, who has no experience in infectious disease modeling, built a model that forecast a far lower coronavirus deaths than actually happened, and additional modeling provided grim prediction about the adverse economic effects, such as a 40% reduction in GDP and unemployment numbers in the tens of millions.^[7] Hassett's model indicated that coronavirus deaths would peak in mid-April, and subsequently drop off to near zero by May 15.^[7][9] Hassett's model contradicts assessments by public health experts.^[32] Within the administration, Hassett encouraged the administration to re-open the economy.^[7] In early-May 2020, Hassett said there might not be a need for more coronavirus economic relief, invoking the possibility that economies in nearly all states could be re-opened by the end of May.^[33] When Hassett's model was released to the public, it was widely criticized by academics and commentators.^[8][10]