Only three out of the ten commandments are codified into US law: thou shalt not kill (murder), thou shalt not steal(theft), thou shalt not bear false witness (perjury). Adultery laws might still be on the books in some states, but I doubt they'd hold up in court. Otherwise you are perfectly free to dishonor your parents, worship graven images, work on Sunday, take the Lord's name in vain, and covet your neighbor's wife.
As for abortion: an embryo or a fetus is not a person and it is not viable to live on its own. Even the Bible makes this clear since the punishment for striking a pregnant woman and causes her to miscarriage is not the same punishment as murder.