WASHINGTON (Reuters) - The U.S. Senate took a procedural vote on Monday to clear the way for confirming Jay Clayton as the next head of the Securities and Exchange Commission. In a 60-36 vote, the Republican-led Senate voted to end debate on Clayton, with some Democrats joining Republicans in support. A final confirmation vote is expected later this week, and the Senate may take up to 30 hours to debate his confirmation prior to the vote. 