America has clearly changed for the better in terms of gender equality but has not reached a state in which men and women are truly equal.
100 years ago, women were still not allowed to vote in the US. This shows very clearly how far women have come as there are many female governors today and as Hillary Clinton came very close to being the Democratic nominee for president in 2008.
However, there are still some major issues for women. The biggest of these has to do with equity in work and wages. Women still make something along the lines of 77% of the wages of similarly educated men today. There are many professions where women are very rare, even though those jobs do not require any sort of physical strength. The attempt to pass an Equal Rights Amendment failed in 1982. These sorts of things show us that gender equality has still not been achieved.