"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 BennetDemocratic donors stuck in shopping phase of primary Overnight Health Care — Sponsored by America's 340B Hospitals — CDC blames e-cigs for rise in youth tobacco use | FDA cracks down on dietary supplements | More drug pricing hearings on tap The Hill's Morning Report - Presented by the American Academy of HIV Medicine - Next 24 hours critical for stalled funding talks MORE (D-Colo.), Kent Conrad (D-N.D.), John HoevenJohn Henry HoevenDem lawmaker 'confident' bipartisan group will strike deal on border funding Congress in painful start to avoid second shutdown Republicans want Trump to keep out of border talks 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) MoranSenators optimistic about reaching funding deal GOP senators read Pence riot act before shutdown votes On The Money: Shutdown Day 26 | Pelosi calls on Trump to delay State of the Union | Cites 'security concerns' | DHS chief says they can handle security | Waters lays out agenda | Senate rejects effort to block Trump on Russia sanctions MORE (R-Kan.), John ThuneJohn Randolph ThunePolls: Hiking estate tax less popular than taxing mega wealth, income Will Trump sign the border deal? Here's what we know Key GOP senator pitches Trump: Funding deal a 'down payment' on wall MORE (R-S.D.), Mark UdallMark Emery UdallGardner gets latest Democratic challenge from former state senator Setting the record straight about No Labels Trump calls Kavanaugh accusations ‘totally political’ MORE (D-Colo.), Tom UdallThomas (Tom) Stewart UdallHillicon Valley: House panel takes on election security | DOJ watchdog eyes employee texts | Senate Dems urge regulators to block T-Mobile, Sprint deal | 'Romance scams' cost victims 3M in 2018 Dems urge regulators to reject T-Mobile, Sprint merger Dems wary of killing off filibuster MORE (D-N.M.), and Sheldon WhitehouseSheldon WhitehouseDemocrats brush off GOP 'trolling' over Green New Deal GOP Green New Deal stunt is a great deal for Democrats Pence met with silence after mentioning Trump in Munich speech MORE (D-R.I.). The National Bison Association, Intertribal Bison Council and Wildlife Conservation Society also support the measure.