A new survey finds that almost 75% of Americans believe excessive money has corrupted the political process, even as the United States heads toward some of the most expensive elections in its history. The US Supreme Court has ruled that political spending constitutes a form of free speech and therefore cannot be legally restricted, a position that has enabled uncapped campaign contributions. Experts argue the ruling need not be the final word, drawing comparisons to speed limits on roads as evidence that democratic societies regularly place boundaries on otherwise protected freedoms.