"The United Egg Producers and the Humane Society of the United States worked for over a year to reach this compromise, and I believe it is one that strikes a very fair balance," Feinstein said last month. "Producers must enlarge cages for egg-laying hens and allow space for the birds to engage in natural behaviors such as nesting and perching."

ADVERTISEMENT
Both the bill and the amendment set minimum floor space requirements per hen, and would phase in these requirements over 18 years. It would also prohibit excessive levels of ammonia in hen houses and require humane euthanasia of spent hens.

The HSUS issued a statement on Tuesday calling for the adoption of the amendment by the Senate.

"It's my hope that senators break free of the old paradigm — animal advocates versus agriculture industries — and recognize that this solution serves all parties, especially consumers," HSUS CEO Wayne Pacelle said. "Failure to enact this provision will mean that the egg industry and animal advocates will go back to costly state-by-state battles that will slow down progress, cost both sides hundreds of millions of dollars and leave all parties with uncertain outcomes."

Sens. Richard BlumenthalRichard BlumenthalOnly Congress can enable drone technology to reach its full potential Overnight Regulation: Labor groups fear rollback of Obama worker protection rule | Trump regs czar advances in Senate | New FCC enforcement chief Dems urge Sessions to reject AT&T-Time Warner merger MORE (D-Conn.), Scott Brown (R-Mass.), Maria CantwellMaria CantwellDems push for more action on power grid cybersecurity Overnight Regulation: Labor groups fear rollback of Obama worker protection rule | Trump regs czar advances in Senate | New FCC enforcement chief Dems urge Sessions to reject AT&T-Time Warner merger MORE (D-Wash.), Jeff MerkleyJeff MerkleyOvernight Regulation: Labor groups fear rollback of Obama worker protection rule | Trump regs czar advances in Senate | New FCC enforcement chief Dems urge Sessions to reject AT&T-Time Warner merger Dems step up attacks on GOP ObamaCare bill MORE (D-Ore.), David VitterDavid VitterOvernight Energy: Trump set to propose sharp cuts to EPA, energy spending Former La. official tapped as lead offshore drilling regulator Former senator who crafted chemicals law to lobby for chemicals industry MORE (R-La.) and Ron WydenRon WydenCommerce secretary spoiled Treasury secretary’s secret wedding: report Dems push for more action on power grid cybersecurity Senate bill would repeal most ObamaCare taxes, delay Cadillac tax MORE (D-Ore.) sponsored Feinstein's original bill. But the amendment to the farm bill also has the support of Sens. Susan CollinsSusan CollinsGOP Medicaid cuts will be disastrous for millions with Alzheimer’s Rocky rollout for Senate healthcare bill Overnight Healthcare: Latest on Senate healthcare bill | Four conservatives say they'll oppose | Obama slams bill | Health groups offer scathing criticism MORE (R-Maine), John KerryJohn KerryBudowsky: Dems madder than hell Tillerson: 'My view didn’t change' on Paris climate agreement CORRECTED: Three members of Mueller's team have donated to Democrats MORE (D-Mass.), Joe Lieberman (I-Conn.), Patty MurrayPatty MurrayDems push for more action on power grid cybersecurity Live coverage: Senate GOP unveils its ObamaCare repeal bill Senators grill Perry on Yucca nuclear storage plans MORE (D-Wash.), Bernie SandersBernie SandersSanders: ‘Thousands will die’ under GOP health bill A tale of two drug bills — one proposed bill will worsen the drug prices crisis The Hill's 12:30 Report MORE (I-Vt.) and Robert MenendezRobert MenendezBipartisan group, Netflix actress back bill for American Latino Museum The Mideast-focused Senate letter we need to see Taiwan deserves to participate in United Nations MORE (D-N.J.).

Senators are currently working on an agreement on which amendments to the bill might be considered.