"We're going to have to tweek Social Security, like Ronald Reagan did" - Obama.

the government is going to raise the age to collect Social Security benefits.
possibly in Obama's next term.

"Romney's health plan is identicle to Obamacare" - Obama

you just watched two politicians argue which plan is better, and the are both parts of the same plan, the Federal part and the State part.

"WHEN Obamacare is fully implemented..." - Obama

Obama basically just showed his middle finger to the whole Unites States and said, no matter what happens this plan will not be repealed.