Mexico's conservative ruling party says it will ask the Supreme Court to review Mexico City's recent decision to allow first-trimester abortions in the capital.

City lawmakers approved the measure Tuesday on a 46 - 19 vote. The move makes it legal to have an abortion within the first 12 weeks of pregnancy. Elsewhere in Mexico, abortion is legal only in cases of rape, incest, or danger to the mother's health.

Supporters, including Mexico's liberal Party of the Democratic Revolution, say the new law will protect women from unsafe, illegal abortions.

But critics, including the Roman Catholic Church and President Felipe Calderon's National Action Party, fear it is a step toward legalized abortion across Latin America. Only Cuba and Guyana currently allow abortions, though Colombia is considering a law to allow the procedure.