I don't believe that.  A candidate that is elected upon his word and cannot hide behind the skirts of a political party will be more accountable to his constituents.
 
The two major political parties in the US are among the most corrupt organizations in the world.  They are no better than the ruling parties in Pakistan and Turkey.  We have developed into a Du-archy.

We haven't had a decent President since Eisenhower. Every one since then has been bought and paid for by the Soros' and Koch's and their like.

Contrary to what the parties would like everyone to believe, the nomination of Trump and the fact that the democratic nomination was stolen from Sanders by the party elite, the last election is proof of the rejection of the two party system.  Both parties are imploding and if the two party system is not dissolved, I expect there will be as many as five viable parties in the near future