My new line of work has thrust me into the world of immigration and international employment law. It's not as cerebral as it sounds; we basically respond to clients' needs on a daily basis, pushing around (tons) of visa forms left and right.
As far as I can tell, the Z visa has almost no impact on our work. The push for anti-immigration legislation, however, does. Immensely. Blue collar labor policies covered by "guest worker" programs - the stuff we hear about on TV - represent only part of the immigration issue. You hear very little about "business" immigration (corporate transfers), which accounts for a huge portion of immigration traffic through the U.S. The issue is incredibly complicated, and watching TV does little to help sort things out.
It's a swamp out there.