With all the advancements made in medicine, 24 weeks is the best week can do regarding viability outside the womb. There are many reasons why abortions are performed in the first place. The excuse stating people are using it as a form of birth control is comical. Look up trisomy 13 and 18. Those are just two examples that would make one question their ability to bring a fetus to term and deliver if the testing performed during pregnancy showed so.