Orange broadband is not the fastest broadband offered. That honor goes to O2. Orange broadband just so happens to be the slowest broadband when compared to others.
From my research on orange broadband, no it is not in America. Orange broadband seems to be only for the United Kingdom. So the answer to your question is no orange broadband is not available in...
The fastest BROADBAND plan is given by BSNL. It gave 24Mbps last year and have planned to launch a whopping 100 Mbps this year...... Dats Awsome................