@talk72000,
Sharia law is the idea that religious teachings and morals should inform and affect laws. Genital Mutilation has nothing to do with Sharia law. Honor killing and sexist customs are no more a problem with Muslim Sharia law then it is Christian "Sharia" law.
This is a moot point with the current use of the term "Sharia" in todays political debate. Honor killings are not allowed in any Western country even where supposedly "Sharia law" has already taken place, for example Great Britain. The idea that honor killings will ever be legally sanctioned in the US is ridiculous.
There is an interesting issue whether religious people should be able to submit themselves to a contractual agreement that would legally obligate them to follow religious tenets.
Again, Christian conservatives want exactly this. Three states in the US now allow this type of "Covenant marriage" specifically designed for Christians who want to be bound by their religion.
My point is that Muslim "Sharia" law is no different then Christian "Sharia" law of Jewish "Sharia" law, all of which are tolerated in Western Societies.
The difference is that anti-Muslim hatred is rather popular right now.