In an 11th-hour development, the House Homeland Security Committee is pushing to include in the omnibus package a provision on ammonium nitrate security, similar to HR 1680 passed by the House on October 23 that would regulate the production, sale and purchase of the fertilizer ingredient. Under the House version, anyone who sells or buys ammonium nitrate would have to register with DHS or face a $50,000 fine. Buyers' names would be compared to a "watch list" maintained as part of the DHS Terrorist Screening Center, and if no threat is found a registration number would be issued. Sellers would be prohibited from selling or transferring ammonium nitrate to anyone without a valid registration number. The measure also carries an appeals process for anyone who thinks they've been mistakenly identified as a threat. The status of the inclusion is unknown, though committee leadership said it had not received any resistance on the request. The Senate has included ammonium nitrate security language in its Homeland Security appropriations bill. The House was expected to take up the reworked spending bill this week.