I find it highly insulting that "moms" are assumed to have some extra layer of integrity.
Most of the male members of the Senate have children. We don't assume that means they have better judgment than those who don't.

I think people are people. Some have strong morals and high integrity, some don't.
Being a parent doesn't magically change your personality. Some people use that opportunity to grow, but lots don't.

Of all my friends with children, I'd say maybe one really changed with parenthood. The rest are still the same people they've always been, just with extra little folks living in their house now.