President Donald Trump’s first official economic report to Congress makes a lengthy case that the U.S. economy has been weak in recent years, not because of the severity of the most recent recession, but because of policy mistakes by Trump’s predecessor.

“The stagnation of America’s middle class in the wake of the recession is much worse than believed, and government policy under President Obama should share some of the blame,” said Kevin Hassett, the chair of the Council of Economic Advisers, the lead author of the report and the president’s top economist. “One explanation for this historical slowdown is that Obama’s tax and transfer policies worsened the wound.”