Stands to reason that a Republican sympathizer would see digging endless canals as a better investment than using existing rails to better advantage.
Trucks are perfect for local deliveries.
Trains are perfect for high speed, efficient long distance hauling.
Canals are slow, expensive to build, and extremely inefficient.
High speed rail can achieve 200+ MPH
Trucks can do about 70MPH but must drive slower to conserve fuel.
Canals are good for about 4MPH.
Republicans are good for nothing.