premise: Republicans favor letting the Ambassador Bridge owner build a second , privately owned span next to the bridge without public funding . Democrats prefer a publicly financed bridge farther downriver . The agreement allows the bridge study to move ahead but requires legislative approval for construction after MDOT presents its final report on the project to lawmakers next year . " There will be plenty of accountability and transparency in the bridge process , because construction can not begin until the legislature gives the OK , " said Rep. Lee Gonzales , D - Flint , who chairs the House Appropriations subcommittee on transportation . Why do the republicans and democrats differ on their decision about the bridge ?
hypothesis: They just like arguing with each other .