Complex sentence: Under the provisions of the Texas Constitution, the Lieutenant Governor is President of the Texas Senate, and, unlike most other state constitutions and the U.S. constitution, regularly exercises this function rather than delegating it to the president pro tempore or a Majority Leader.
Split into simpler sentences: Under the provisions of the Texas Constitution, the Lieutenant Governor is President of the Texas Senate. Unlike with most other states' senates and the U.S. Senate, the Lieutenant Governor regularly exercises this function rather than delegating it to the president pro tempore or a Majority Leader.