After successfully making it very difficult or impossible for the DNR to buy public lands for itself the focus has now shifted to Conservation Boards and INHF.
The house bill that didn't progress was a nuclear bomb for future public land in Iowa. The outcry was massive and it was shelved (for now). The current senate bill is a much more focused attack on the INHF which is well known for working with both the DNR and local County Conservation Boards to find creative ways to acquire more public lands.
Farm Bureau and Senate Republicans are making the argument that INHF using the SRF low interest loan program is unfair to new farmers trying to buy land. I personally find if laughable to think that one of the main reasons new farmers can't afford to get into farming and/or buy ground is because of the INHF using this fund to buy a few pieces of land, but to each their own.
The INHF is using this money for non-point source water quality improvements (restoring wetlands and grasslands that protect the watershed for example). It just so happens these projects are also able to be used for public hunting or other types of natural resource areas. The IDNR and IFA set the rules and jointly administer the program. Projects must have a direct, unequivocal water quality benefit to be eligible for the loan. If a farmer or anyone else wants to use SRF loans to buy land and use it for an approved water quality improvement, they could apply for the low interest loans as well since non-point projects can be privately owned.
IMHO what it boils down to is that FB doesn't want any more public land. The direct frontal assault blew up in their faces so now they are on to more obscure low hanging fruit.