What major changes did barack obama do to the US?

Answer 1

In no particular order: Federal funding of stem cell research; closer oversight of the financial services/credit card industry; ratification of the nuclear weapons reduction treaty with Russia; rescue of the US automobile industry; health insurance reform; timetables for bringing our troops home from Iraq and Afghanistan; extension of unemployment compensation; an end to discrimination against homosexuals in the military.

Answer 2

During his tenure as President, Barack Obama implemented several major changes in the US. Some of these include the Affordable Care Act (ACA), which expanded healthcare access and insurance coverage, the Dodd-Frank Wall Street Reform and Consumer Protection Act, aiming to regulate the financial industry, the repeal of the "Don't Ask, Don't Tell" policy in the military, allowing LGBTQ+ individuals to serve openly, and the Paris Agreement on climate change, committing the US to reduce greenhouse gas emissions. Additionally, Obama signed executive orders on issues like Immigration and gun control.