The federal government's plan to legalize marijuana by next summer is a step closer. Bill C-45 received final approval Monday in the House of Commons, passing by a vote of 200-82. It now moves to the Senate, where Conservative senators are threatening to hold up passage of the bill. That could yet derail the government's plan to have a legalized pot regime up and running by July. Some provinces have complained they can't be ready to implement and enforce the legislation so quickly. But a Conservative bid to force a delay in its implementation went down to defeat, by a vote of 199-83.