* Affordable Care Act, a.k.a. Obamacare, survives challenge in Supreme Court
* Reflation trades take a hit after Fed hints at hawkish policy shift
* US dollar on track for its best week since last September
* Commodities take a hit on China crackdown and stronger dollar
* US Leading Economic Index continued to increase in May
* Philly Fed Mfg Index continues to reflect solid expansion in June
* US jobless claims post unexpected gain, rising to highest level in a month
* 10yr-2yr Treasury yield curve slips to narrowest spread since early March: