Thanks for a good article, making it clear that "tax dollars fund[ing] abortion . . . would force people who believe abortion to be the killing of innocent human life to fund it" and that that "is clearly an unethical move." That unethical move has already been made in fifteen states and to a small extent at the national level. The pro-choice groups who advocate such laws and the politicians who enact them are clearly unethical.
And what about pro-lifers who acquiescently agree to participate in abortions in that way, are they ethical?
My thinking is, "we cannot completely avoid leaving an abortion 'footprint' on the earth in financial terms. But I would think that any pro-lifer would consider it their moral duty to minimize their footprint – their money that goes to abortion – at the cost of some degree of sacrifice of comfort and convenience for themselves. Preferably in a way that attracts attention to their strong convictions."
I would like to invite you to look at http://www.noterminationwithoutrepresentation.org/we-are-all-helping-commit-abortions-should-we-be/