Education is part of almost every market’s mission. Explain to your vendors and shoppers that when food assistance programs include regionally sourced food and farmers, it benefits everyone. HOWEVER, do remember those of you that are 50(c)3 organizations, you must not use your organization’s resources to lobby for legislation.
From the IRS website:
… may not attempt to influence legislation as a substantial part of its activities and it may not participate in any campaign activity for or against political candidates.

For those of you NOT 501(c) 3 organizations, a letter writing campaign might be in order!

WIC's Fresh Produce Program Cut 30 Percent – NYTimes.com.