[Red Steel]

A group of sheriffs, many from rural counties, spoke against background checks, with one representative, Sheriff John Cooke of Weld County, speaking as a group of supporing sheriffs, all in uniform, stood quietly behind him.

Wrong. That was Sheriff Maketa from El Paso County who spoke, and he is from the largest county in Colorado.

Wiki:

"El Paso County is the most populous of the 64 counties of the state of Colorado of the United States. The U.S. Census Bureau reported that the county population was 622,263 in 2010, greater than Denver County, which had previously been the most populous county.[1]"

[coloradan]

The largest county might be the one with the most square miles, not the greatest number of people living there. Weld is pretty big, although I don’t know without checking, whether it actually is the largest.