From what I read they are having issues with other herbicides besides Roundup in NC. But (relationship with neighbours notwithstanding) one can complain about pesticide drift (see link below), as Patiodaddyo said - they shouldn't be spraying when it is windy. I live next to a field that is sprayed with Roundup annually and have ornamental plants along the fence line. They've never been damaged by the spray.
"In recent years this Department has investigated several drift related complaints in North Carolina specifically involving 2,4-D or triclopyr/clopyralid herbicides."
From (select "drift investigations")
http://www.ncagr.gov/spcap/pes...
I do find the new idea of Dicamba-ready crops rather concerning.....
