Obama pursued an aggressive domestic policy in response to the Great Recession, passing a large economic stimulus package and sweeping Wall Street reform. His signature achievement was the Affordable Care Act to provide health insurance to millions of uninsured Americans. However, this substantial spending contributed to increased budget deficits and national debt. Obama also advanced civil rights issues like repealing Don't Ask Don't Tell and supporting same-sex marriage. His domestic agenda faced partisan opposition in Congress, leading to a government shutdown, but the economy and job market gradually improved during his presidency.