Grassi says Francis will make big changes in ‘small steps’
Envoy has visited more than 20 countries since April
Yayo Grassi and partner met with pontiff in D.C.
Pontiff cites ‘natural differences between man and woman’
Health Minister calls change ‘scientifically and technically accurate’
Vatican has yet to respond to meeting request with LGBT Catholics
Envoy just returned from 11-day trip to region
Randy Berry to visit five countries during 11-day trip
Giniveth Soto killed in Caracas as someone tried to steal car
Advocates sharply criticize church at end of two week meeting
