Complex sentence: There was little concern that the judiciary might be able to overpower the political branches; since Congress controlled the flow of money and the President the military, courts did not have nearly the same clout from a constitutional design standpoint.
Split into simpler sentences: There was little concern that the judiciary would be able to overpower the political branches; congress controls the money flow and the President controls the military. Courts, on the other hand, do not have the same clout from a constitutional design standpoint.