I found The Politics Industry by Katherine Gehl super enlightening and well-researched on this very idea (https://www.amazon.com/Politics-Industry-Political-Innovatio...). The basic premise is that the current "market dynamics" of Politics (when viewed like any other industry) actively disincentivizes results. Painting with a somewhat broad brush, it doesn't making sense for a politician to make progress on immigration reform because that lessens its saliency for raising money and turning out the base.

The solution proposed is a combination of "Final-Five" open primaries with ranked-choice voting in the general election. This is what just happened in Alaska and is on the ballot in Nevada in November.

Which reminds me...if you're a Nevada voter, vote YES on ballot question 3!