republican congressman devin nunes outith a new fundraising letter this week, claiming he's being targeted for exposing scandals and cover-ups in the obama administration. the house intelligence committee chairman, now potentially at risk of losing his seat after his controversial moves to defend president trump in the russia investigation. cnn's nick watt reports from central california. >> reporter: california's central valley is deep red farm country, and a long-time lock for devin nunes. >> i like his values and the way he's represented central california. >> that one just had a calf. so they moved from this pen as they get close, this is our maternity area. >> reporter: a third-generation dairy farmer, in 2010, he ran unopposed in 2016 he pummelled his democratic opponent by 35 points. but there are now small weekly