Conversation so far:
which constitutional power of congress was used to establish the individual mandate under obamacare
On June 28, 2012, the Supreme Court of the United States used the constitutional power of taxation to establish Obamacare.
What is the individual mandate?
If you can afford health insurance but choose not to buy it, you may pay a fee when you file your federal taxes which called the individual mandate.

Question: when was the act made into law
Self-contained rewrite: When was the Patient Protection and Affordable Care Act signed into law?