Amend the Moffat amendment to CSHJR 4 by striking lines 3 through 10 and substitute the following: SECTION 1. Article VIII of the Texas Constitution is amended by adding Section 1-m to read as follows: Sec. 1-m. The legislature by general law may make a river authority that owns or operates one or more steam generating plants subject to a franchise tax. The legislature may impose such franchise taxes only upon that portion of the authority's business that is directly related to the generation, transmission, or distribution of electricity, and at a rate that is not in excess of the rate imposed upon similarly situated private entities engaged in the electric business.