Trump never signed abortion into law.
Reagan repented, learned from his mistake, and became one of the staunchest pro-life politicians in US history. Any doubts about Reagan can be put to rest by reading this, published prior to the 1984 election which Reagan won in a landslide:
Compare that to Trump who openly calls for America's largest abortion provider to be subsidized with US taxpayer dollars.
And you claim to be pro-life, yet support a candidate who will give your tax dollars to Planned Parenthood.