Bloomberg: Royal Dutch Shell Plc (RDSA)s oil spill plans for drilling in Alaskas Beaufort and Chukchi seas dont violate environmental laws, a federal judge in Anchorage ruled in rejecting a challenge by conservation groups. The U.S. Interior Departments approval process wasnt flawed or based on erroneous assumptions and the approvals dont violate the Endangered Species Act, the Clean Water Act or other environmental laws, U.S. District Judge Ralph Beistline ruled yesterday. Shell halted operations off...