This bill makes several changes to Maine's arborist licensing laws designed to simplify the current arborist licensing laws and to provide the public with additional protection against unprofessional conduct of arborists doing business in the State. The changes bring the current law into conformity with actual practices in the arborist profession and allow individuals who are certified by the International Society of Arboriculture, ISA, which currently maintains a testing and certification process as rigorous as the Department of Agriculture, Food and Rural Resource's examination, providing the ISA testing process does not drop below the standards set forth in the State's arborist licensing law. The bill provides the department with the opportunity to suspend, revoke or refuse to issue or renew an arborist license, pursuant to other relevant statutes or provides the District Court with the opportunity to suspend, revoke or refuse to renew a license, if an arborist pursues a continued course of unprofessional conduct as demonstrated by repeated verified complaints against the licensed arborist.