Obama expected to get Keystone bill on Tuesday

The Senate will send the Keystone XL pipeline bill to President Obama on Tuesday, senior congressional sources tell Fox News.

The bill, when it reaches the president’s desk, starts a constitutional "clock" by which the president must either sign or veto the legislation.

Obama has vowed to veto the measure if it reaches his desk before the State Department finishes its report.

Article I, Section 7 of the Constitution states such bills must “be presented to the President of the United States; If he approves he shall sign it, but...