WASHINGTON – The agriculture industry fears a disaster is on the horizon if the one bit of new immigration policy that Congress seems to agree on becomes law. A plan to require all American businesses to run their employees through E-Verify, a program that confirms each is legally entitled to work in the U.S., could wreak havoc on an industry where 80 percent of the field workers are illegal immigrants. So could the increased paperwork audits already under way by the Obama administration.