What is the impact of money on political parties we have studied, since the beginning of the American constitutional government?

What is the impact of money on political parties we have studied, since the beginning of the American constitutional government? What does the Supreme Court decision, “Citizen’s United” mean in terms of candidates, campaigns and party organizations ? would George Washington, Theodore Roosevelt or President Eisenhower have agreed that “corporations are people” and have a first amendment right to free speech through spending unlimited funds on elections?