Over the past 30 years survey researchers have been traking the US public’s attitudes about obtaining a divorce.  From 1974 to 2006 there been very little change in attitudes.  Roughly, about 25% of the public thinks it should be easier to obtain a divorce, about 50% think it should be harder and 20% think the law should stay the same.

Divorce Law Data, General Social Survey, NORC at the University of Chicago.