[prolepunk]

I believe this is a very US-centric viewpoint.

I'm using the article 'Beef Cattle and Greenhouse Gas Production' from Ministry of Agriculture, Food and Rural Affairs. http://www.omafra.gov.on.ca/english/livestock/beef/news/info...

According Food and Agricultural Organization (FAO) of the UN 2006 report livestock were responsible for 18% of all human-related greenhouse gas production. 14.5% according to 2013 report.

Of that 43% is Enteric.

There may only be 9% GHG emissions in the US, but beef also comes from other countries where these emissions are very different. See Regional and Production System differences.

From the article -- There was an approximately 4-fold difference in emission intensity between the top 10% of producers and the bottom 10% of producers within a system.

[nightski]

You are right, but I was discussing in reference to a U.S. based emissions "tax". Maybe I misunderstood and they were suggesting a worldwide tax? Not sure how that would work.

If the U.S. were to tax agriculture production of beef, I'm assuming that would be for U.S. farmers so the relevant statistic is emissions in the U.S.