Umm, he actually didn't say the part about the lie detector. According to the article, he believes that it would be hard to prove an "honest rape," & so it should be taken at face value. Most likely, he simply didn't put enough thought in to come to the conclusion of a lie detector, but still, he didnt' say it.
What he DID say was that you shouldn't be eligible for an abortion if it's more than a few hours since you were impregnated.
Also, I had no idea a shot of estrogen could terminate a pregnancy.