If they wanted to fix it, they would have built a wall.
Any thought that reason for this is a distinct political advantage that Blue or Red gain over each other through this mess is laughable.
In the ludicrous 2 party system of so called democracy, both parties will do the same things, vote in the same bills, pass the same laws, violate the same parts of the constitution, restrict the same freedoms, spy on the same people, get in bed with the same corporations, start the same wars, bail out the same banks, give out the same entitlements, support the same invasive financial regs (FATCA), go into the same amount of debt.
If you think there's any issues bigger than the above that are actually decided on by whom gets voted in, you are still fast asleep.
This immigration thing is merely a sideshow meant to keep everyone arguing among themselves, like abortion, gay marriage, and Treyvon while the water is slowly brought to a simmer.
TRUTH: it's the new hate speech.
In a time of universal deceit - telling the truth is a revolutionary act. - Orwell