I guess you and I will forever be 180 degrees off RiV... One of the few powers I concede to a federal government is the protection of innocent life of it's citizens. States should have the same mentality.
We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights.... foremost being "Life".
I don't rationalize a government that doesn't support the most important gift given from God as one worth protecting at all costs. Replacing life with ambiguous "choice" without consent of both parties isn't very encouraging either. It is life, something any (and all) government should respect utmost. You worry about the next win, I worry that something that gives the same outcome isn't winning, it is supporting the same as the enemy even if in lesser degrees.
Also a bill (passed by Congress and signed by the President) would make the Federal government in the right (yes even protecting the Life Liberty, Pursuit of Happiness God Given rights). Trump has just dumped on government actually acting in it's citizens best interest.
Ok, I understand you want Trump to play it safe, and not stir the water on the issue because he is already so hated he can't hold an pro-life opinion, well it cuts both ways. Spitting on pro-life only makes me like him less than I already did. If he wanted to deflect away from the question, he could say, he doesn't make the laws, Congress does and leave it at that.