I believe that it is important for homeowners to have some knowledge about Chinese drywall and it's present issues. This drywall has been found in houses built during the past decade in the US.  It has been found in houses in the Williamsburg area that were built since 2006
 
You do not want to assume that all home inspectors have a working knowledge of chinese drywall and routinely inspect for it. Some Home Inspectors are purposely taking a step back from the issue and disclaiming it from their reports.
 
Toxic Chinese Drywall
After complaints from homeowners began to mount, numerous investigations confirmed that drywall imported from China during the recent housing boom can emit fumes that can make people sick and damage homes. The U.S. had turned to China as a source for drywall after 2000 when the housing boom created domestic shortfalls in supply.
Consider the facts:
• At least 20 million square feet of Chinese drywall entered the U.S. after 2001
• More than 100,000 American homes could be affected by the hazardous drywall, which:
-Emits harmful sulfur gases
-Corrodes copper wiring
-Damages furnishings and fabrics
-Damages air conditioners, electrical wiring and appliances
Moreover, residents have complained of adverse health symptoms that include:
• Nosebleeds
• Allergies
• Rashes
• Headaches
 
The long-term effects of contaminated Chinese drywall are not yet known. Several  investigations that have been commissioned by governmental bodies and health agencies are currently underway.

I received most of the above information from a local home inspector.