(sigh) I wrote about "Farm Bureau Plans" several times last year. They've been widespread in Tennessee for a long time, and are a big part of the reason for the state's high ACA premiums (TN doesn't have the highest premiums, but they're definitely near the top of the list). Here's the description of typical Tennessee "Farm Bureau" plans:
Traditional plans require medical underwriting that may affect eligibility and rates. Medical information will be requested for any person over the age of 40 and children 25 months and under; medical records may also be requested if any health condition on the application is marked “yes.” Any fees for obtaining medical information will be at the applicant’s expense.
Underwriting guidelines regarding particular conditions may necessitate a benefit exclusion rider, a member exclusion rider or an adjusted rate for coverage. There will be a 6-month or 12-month waiting period for pre-existing conditions, depending upon the plan chosen.
One of the big stories over the past few months has been the Trump Administration's attempts to strip away regulations on non-ACA compliant "Short-Term, Limited Duration" plans (by making them neither short-term nor of limited duration) and "Association Health Plans" (by recategorizing them from state-regulated, Small Group plans to mostly unregulated Large Group plans).