nbc's jennifer borkland explains what it will mean for you. >> the winds of change are blowing throughf the nation's a worker shortage because of immigration crackdowns could be cat strafic. >> it's not like the food will be twice as expensive. it will be five times more expensive and that doesn't seem to be on people's radars. >> reporter: from wineries to green fields of lettuce, uncertainty is growing as immigrant labor is threatened. >> it's a concern. there's always been concern. our workforce is largely, you know, an immigration population. >> reporter: many long-time migrant workers are in the u.s. illegally, and the uncertainty on what could happen to them is rustling through the agricultural community. >> they shift, they follow the crops, they follow who's paying, they follow the consistency of field work. that's where the inconsistencies of labor comings. >> reporter: pistachio farmer tom coleman said he's seeing a high hand labor costs, berries, things like that, it's very difficult for them to find the labor. >> reporter: so while farmers shift to less labor intensive crop