There wouldn't be an exception to the requirement for four years of physical presence under the bill. That is a requirement under the bill; however, it would be four years of physical presence out of a six-year window. Those who have to travel quite a bit for their work or for family reasons would have the flexibility to use the full two years out of the six-year window however they choose over that six-year period for times that they may need to be away. That would accommodate people in all kinds of lines of work.
On April 28th, 2014. See this statement in context.