Obamacare has reduced national healthcare spending, which is big part of our overall spending. In fact one the 3 legs that contribute most towards our spending. In my opinion- Consumer spending has to do more with per capita incomes and consumer confidence, over equity market gains.
I know there are many critics of Obamacare, but the fact is that this new law has started to show a lot of activity in terms of new business ventures, new partnerships being formed and companies already in business, are spending $$$ to optimize their Healthcare products and services mix.
All of these will have significant benefits to the economy in terms of new job creation, new businesses or existing business expansions, etc. So there is another economic boom on its way in my opinion.
While this is great news, it's a mixed blessing for developed countries. If US growth continues like this, QE will have be unwound sooner rather than later. Which is going to hurt financial markets everywhere. The positives so far have been the noises from the Fed which seem to indicate they're taking other countries concerns into account.
The interesting thing will be, if the growth continues does the Fed go back to a purely inflation mandate?
1) The US economy is truly seen as a part of the global economic system, in terms of cause, effects and changes that happen across the globe due to volatility. So an governing body, specially the Feds, make sure that there won't be a global ripple effect if you will, to any changes.
2) The growth in the US market pushes other markets to follow suit so its a positive impact across the globe.
3) Yes, if I remember reading reports on Inflation a few months ago, there is estimated 3% inflation being accounted for, over the next few years. Just the result of the market cycle, nothing else. The interest rates, business, commercial and residential borrowing will jump up but at higher interest rates, so inflation will take place. However, fuel, as one of the most critical commodity in building / distribution of products is becoming cheaper by the day. That could have negative impact on inflation so the percentage could reduce, as farm / factory to market costs may be cheaper due to cheaper fuel.