InsideClimate: A Canadian company is repairing dozens of defects along the newly laid southern leg of the Keystone XLthe section of the oil pipeline that does not need approval from the U.S. State Department and is already under construction. The Oklahoma-to-Texas pipeline is not yet operational, but landowners worry that the repairs hint at more serious problems that could someday lead to oil spills. The project will carry primarily Canadian oilincluding diluted bitumen from Alberta's oil sandsfrom Cushing,...