The people that like cheap meat won't like that, a lot.
Ag lobbies are powerful enough no one in the US would dare propose anything like that. Even in climate conscious EU a much more modest, roundabout way of addressing part of the problem of ag emissions (nitrate levels) has been met with massive farmer protests.
Oil+gas companies, and fertilizer producers, are deep in the supply chain and are thus embedded in the governing bodies (because no country is very good at preventing corruption). Things only change when those companies let them change.
Ag lobbies are powerful enough no one in the US would dare propose anything like that. Even in climate conscious EU a much more modest, roundabout way of addressing part of the problem of ag emissions (nitrate levels) has been met with massive farmer protests.