Obama expected to get Keystone bill on Tuesday 5/4

In this article, it talks about how how president obama is expecting the Senate to send the Keystone XL pipeline bill to him on Tuesday. Once president obama has received this bill, he is under a constitutional "clock" which means he has to either sign or veto the legislation. He is said to veto the bill if it gets to him before the State Department finishes its final report. http://www.foxnews.com/politics/2015/02/23/keystone-bill-to-be-sent-tuesday-to-obama/