Article continues below advertisementIt looks like there may be tension brewing between J.D. Vance and Marco Rubio - at least behind closed doors.According to a source, the two political heavyweights are "locked in a behind-the-scenes battle for influence and visibility" as talk about the 2028 presidential election heats up.Article continues below advertisementSource: MEGAInsiders claim J.D. Vance and Marco Rubio are quietly competing behind closed doors.