Jenkins has been described as second only to Joe Arpaio on the rightwingnut law enforcement intolerance meter. Frederick is the only Maryland county to enforce/cooperate with the 287[g] program which involves the county detaining suspected immigrants for ICE. All other counties have declined or have dropped their participation agreements.
Jenkins has also been involved with the unnecessary death of a local Downs Syndrome man, Ethan Saylor, which has made national news; a lawsuit over detaining a woman with no probable cause which wound its way all the way to SCOTUS which denied cert, and several constituent deaths which were unnecessary and deaths in the County jail where ostensibly a failure of supervision and training of staff come into play.
This is an election year and Frederick County is run by a completely Republican Board of County Commissioners which voted in an "English Only" ordinance. Four of the sitting Commissioners are running for the newly formed County Council seats and Sheriff Jenkins is running as an incumbent. Next door, in Carroll County this happened:
Last I checked we aren't on the border with Mexico.