Orlando to become a sanctuary city?

Orange county, Florida is coming under pressure from illegal immigrants to declare themselves to be a so-called sanctuary city. If cities and localities are free to defy any Federal laws and rules that they don't agree with, and it is unconstitutional for the Feds to with hold funds from those local governments, then I think it is time that more localities ignore gun laws, gay marriage laws, tax laws, and many other laws. If it works for immigration, it should work for other laws...