Liliane, if you have data that support your point that abortion "is quite often a medical necessity," I would be grateful if you would share this.  Most of the sources I read, which actually cross the political spectrum, suggest that the percentage is less than 1% of cases:  http://www.abortionfacts.com/facts/8.   Other sources, which focus on self reporting by women as to why they had an abortion puts it as high as 2.8%.  But possibly I am using dated or erroneous data and you would be kind enough to correct me?  Either way, I believe abortion was not illegal in those cases, nor do most pro-life politicians advocate making it illegal in such cases.