WASHINGTON -- A last-minute addition to a giant spending bill that would ease a 2010 law that put restrictions on risky investments by banks after the 2008 economic crisis is threatening to derail the legislation. A House procedural vote on the $1.01 trillion spending bill for the 2015 fiscal year almost went down to defeat via a 213-213 tie, until a Republican House member reversed his no vote to allow deliberations on the measure to continue. The bill had lost Democratic votes because of opposition to the language that changes safeguards in the 2010 Dodd Frank Law. The provision scaling...