RSRH, in light of the Supreme Court decision in Zelman, state constitutional provisions could be interpreted to allow vouchers to be used for yeshivot.
Ready, according to what I read that the Aguda acted in concert with another major religious organization to lobby Congress and HEW with Rav Moshe’s permission. Interfaith meetings are something else. Rav Soloveichik also opposed them saying that his talmidim were lawyers not theologians. What I meant about “all or none” is that a program that benefits yeshiva students must also benefit students in other religious schools. I not, it is in violation of the Establishment clause.As for Sheva Mitzvot, as I wrote many, such as the Lubavitcher Rebbe, actually say that we are obligated to preach them.