In a public statement issued April 18, the bishopsa#39; conference expressed its support for die democratic government headed by President Raul Alfonsin. ... Observers here say that the hierarchya#39;s new attitude is a response to Pope John Paula#39;s open support for the democradc system. ... The Mexican navy has stepped up its patrols in the gulf since a U.S. ship carrying 3, 000 tons of toxic industrial waste wasanbsp;...