"I ask my colleagues to help me support and pass this legislation honoring the bison and designating it as our national mammal," Enzi said. "The bison has and will continue to be a symbol of America, its people and a way of life."

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Three states have designated the bison as their state mammal and American bison freely roam national parks, such as Yellowstone and Grand Teton.

"The bison has been integrally linked to the economic and spiritual lives of many Native American tribes over the centuries," Enzi said. "Since our frontier days, the bison has become a symbol of American strength and determination."

The bipartisan bill is co-sponsored by Sens. Michael BennetMichael Farrand BennetSenators press for answers in Space Command move decision Biden announces first slate of diverse judicial nominees American Rescue Plan: Ending child poverty — let's make it permanent MORE (D-Colo.), Kent Conrad (D-N.D.), John HoevenJohn Henry HoevenOVERNIGHT ENERGY: Supreme Court declines to hear challenge to Obama marine monument designation | Interior reverses course on tribal ownership of portion of Missouri river | White House climate adviser meets with oil and gas companies Senate GOP pushes back on list of participants in oil and gas leasing forum Small cities fret over feds redefining metro areas MORE (R-N.D.), Mike JohannsMichael (Mike) Owen JohannsMeet the Democratic sleeper candidate gunning for Senate in Nebraska Farmers, tax incentives can ease the pain of a smaller farm bill Lobbying World MORE (R-Neb.), Jerry MoranGerald (Jerry) MoranBipartisan lawmakers call for action on anti-hate crime measures Republicans don't think Biden really wants to work with them Trump allies line up ahead of potentially bruising primaries MORE (R-Kan.), John ThuneJohn Randolph ThuneSchumer kicks into reelection mode The Hill's Morning Report - Biden shifts on filibuster Biden allies eye two-step strategy on infrastructure MORE (R-S.D.), Mark UdallMark Emery UdallKennedy apologizes for calling Haaland a 'whack job' OVERNIGHT ENERGY: Haaland courts moderates during tense confirmation hearing | GOP's Westerman looks to take on Democrats on climate change | White House urges passage of House public lands package Udalls: Haaland criticism motivated 'by something other than her record' MORE (D-Colo.), Tom UdallTom UdallOregon senator takes center stage in Democratic filibuster debate Bipartisan bill seeks to raise fees for public lands drilling OVERNIGHT ENERGY: Haaland courts moderates during tense confirmation hearing | GOP's Westerman looks to take on Democrats on climate change | White House urges passage of House public lands package MORE (D-N.M.), and Sheldon WhitehouseSheldon WhitehouseLawmakers say fixing border crisis is Biden's job Democrats wrestle over tax hikes for infrastructure Democrats look to impose capital gains tax at death MORE (D-R.I.). The National Bison Association, Intertribal Bison Council and Wildlife Conservation Society also support the measure.