The list of Democratic demands in an omnibus spending bill is growing, threatening the Republicans' desired repeal of the 40-year-old ban on oil exports.

Industry lobbyists say an agreement on a set of demands has not been resolved, with legislative language defining much of the horse trading due out Monday. Congress passed a five-day measure to fund the government until the particulars of a long-term spending package can be worked out. President Obama signed the measure on Friday.

Ross Eisenberg, energy policy vice president for the National Association of Manufacturers, says lawmakers are being tight-lipped on the details of the deal, but he suggested the list of environmental sweeteners is growing.

"I am getting radio silence in conversations" with lawmakers as of Friday, he said, adding that it still "remains to be seen" what happens on oil exports.

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