In 140 characters or less, the following people on Twitter answered that question as follows: 1.  @PoppyDavis from Washington D.C. – “4 produce: FoodSafety regs that conflict w/ environmental regs & make farmers responsible 4 what happens in process & transit.” 2.  @nycUlla from New York City and Delhi, New York – “I would say consolidation (anti-trust).” 3.  @craig_leach from …