Republicans and why they don't want to succeed
If you are a Republican in Congress and you have been running on a platform of dismantling Obamacare, reducing taxes, and deregulating business; what will you run on if you actually achieve those things. However, if you come really close to those goals, but don't actually pass meaningful legislation, you can continue to run on that same platform forever. You can continue to blame the democrats and maintain an urgency to get more seats in Congress to actually pass the laws they "wanted" the entire time.