Andrés Manuel López Obrador

Mexico's new president takes office

MEXICO CITY -- Felipe Calderon, a diminutive but determined 44-year-old conservative, was inaugurated yesterday as president of a deeply divided Mexico, amid fisticuffs between rival lawmakers and raucous protests in the country's Legislative Palace.

Leaders of the largest opposition party in Congress, the leftist Democratic Revolution Party or PRD, say Calderon's election was illegitimate, and they battled conservative congressional deputies and senators on the floor most of the week. But the leftists failed in their attempt to keep legislators out of the chambers so that the joint session of Congress would lack a quorum.

Yesterday morning, with leftist congressmen using...