Here is a good essay in Public Discourse by Stefano Gennarini. He describes continuing efforts to promote a right to abortion in international law and suggests how the Trump Administration ought to respond.
Here is his conclusion:
“The stakes are higher than ever for the pro-life cause internationally. The Trump administration must continue to push the United Nations to respect U.S. sovereign prerogatives not to support abortion in humanitarian responses. It must not give abortion groups a pass to continue to implement their covert strategy to establish an international right to abortion. Some UN bureaucrats still think the US State Department’s pro-life position is merely a political stunt to appease pro-life US voters, and that in the end the administration will turn a blind eye to the bureaucratic stratagems of the abortion industry. They must be proved wrong.