Biggest obstacle to overcome is apathy. Many people simply do not care about politics, do not care about their elected representatives, do not care about their country, do not care about anything other than their Netflix and their cheeseburger.
If you release irrefutable video proof of every member of congress raping a kid to death maybe half of Americans would care and 1/10 would be willing to do anything about it. Many would not change their political opinion. Many would say it was fake.
The primary weakness of the triparte system of governance is that it relies on an educated, informed and involved populace in order to function effectively without corroding to rot and decay. Without an educated, informed and patriotically involved populace it is not possible to maintain the republic. Whether or not there is a solution to this is unclear.
Due to the ever-increasing complexity of laws, it is impossible for the general public or even our own elected representatives to come to terms with many of the bills written by corporate entities to be shoveled through Congress. The legal hydra has spun out of control and the system needs a complete soft reset.