We are proposing to revise our regulations regarding the movement of plant pests. We are proposing criteria regarding the movement and environmental release of biological control organisms, and are proposing to establish regulations to allow the importation and movement in interstate commerce of certain types of plant pests without restriction by granting exceptions from permitting requirements for those pests. We are also proposing to revise our regulations regarding the movement of soil. This proposed rule replaces a previously published proposed rule, which we are withdrawing as part of this document. This proposal would clarify the factors that would be considered when assessing the risks associated with the movement of certain organisms and facilitate the movement of regulated organisms and articles in a manner that also protects U.S. agriculture.