WHY 20 WEEKS? SIMPLE:
In Roe v Wade, Brennan's extra-judicial research at The Mayo Clinic led him to conclude that viability was around 27 weeks - which was true at the time.
It is no longer true.
Now, a fetus is routinely viable outside the womb at 20 weeks.
Therefore - if the "pro-choice" crowd was intellectually honest - and had a scintilla of moral honesty, then they would demand that a limit of 20 weeks be enforced nationally.
A reduction in the number of weeks is ENTIRELY consistent with the substance of Brennan's Roe v Wade decision.
Opposition to it has no legs to stand on.
The 20-week ban is gaining momentum, nationally - and become an issue for the GOP candidates for the presidential nomination.
I think this could be a big issue that could get the GOP many many new voters to support their presidential candidate: 71% of Americans favor more limits or a total ban. (YES: Gallup shows this number at 71%!)
I have long advocated this step - first blogging it in 2005:
If the SCOTUS is intellectually honest - and morally consistent - then they will marginally rollback the Roe v. Wade cut-off date to the 22rd week - (perhaps further, IF AND ONLY IF medical science can establish that viability begins earlier).
The SCOTUS has precedent for rolling-back the cut-off date; they did a similar rollback on the death penalty, when the majority cited contemporary data as a reason for RAISING the age at which a convicted murderer might be executed.
I EVEN SUGGESTED - BASED ON 2009 MEDICAL CARE THAT IT COULD BE LOWERED TO 18 WEEKS.
HERE'S A PICTURE OF AN 18 WEEK OLD FETUS:
LIBERALS THINK IT'S OKAY TO KILL THAT HUMAN BEING - (see photo above).
I THINK NOT.
I THINK MOST AMERICANS AGREE.
LET'S MAKE IT A NATIONAL ISSUE.
AS A SOCIAL ISSUE - A MORAL AND CULTURAL ISSUE - IT'S WAY MORE IMPORTANT THAT GAY MARRIAGE.
[ADDENDUM: Most European nations ban abortion after 12-14 weeks. YES: Europe - which liberals regularly hold up as being more enlightened and progressive than us backward neanderthals in America - has stricter more limited abortion laws than we do.]