Here are a few Alaska health and welfare non profits which are funded primarily with federal funds (to the tune of hundreds of millions of dollars) and the Executives also seem to be very greedy: http://alaskanonprofitabuse.blogspot.com/
The bottom line is - we need more stringent state laws re: non profits.  We need mandatory audits.  We need transparency.  We need open meetings.  I think all non profits should be required to post their financials online for all to see and scrutinize.