Supporters of the disclosure requirement, which was in the House-passed bill, argue that the financial disclosure forms do not capture the aid lawmakers are receiving.
Check this out:

Senate Agriculture Committee Chairwoman Debbie Stabenow (D-Mich.) offered a defense of controversial aspects of the farm bill, in an appearance on C-Span’s Newsmakers airing Sunday.

During the interview, she explained why a provision requiring lawmakers to disclose crop insurance aid they themselves get from the government was not in the final bill.

The farm bill has passed the House and is heading for a Monday vote in the Senate.

Stabenow, her House counterpart Chairman Frank Lucas (R-Okla.) and other top negotiators decided to remove some payment limits in the farm bill as well as a requirement that lawmakers disclose what crop insurance aid they receive.