Should Democrats give President Trump the signature centerpiece of his campaign agenda? The answer is a resounding yes. Democrats should allow the wall not to give Trump a win but because it is good politics for the Democrats in this critical election cycle. Here's why.
First, they should only allow the wall if they get a path to legal status for the dreamers and reasonable, fair and non-discriminatory immigration standards going forward. That's a big win right there that they can point to. Keep in mind that's not an insignificant feat considering that the GOP controls both chambers of Congress and the White House. The only reason they would be able to achieve this is because of Trump's fetish with getting his wall built.
Next, and, perhaps more importantly from a purely political point of view, the wall will prove to be a nightmare for Trump. Building it will be a logistical nightmare and ultimately will be ineffective. The wall, once authorized, will become a symbol of Trump's incompetence and broken campaign promises. This will become the campaign gift that keeps giving for the Democrats. They can consistently point to the incomplete and ineffective wall that Americans, not Mexico, are funding. Once authorized, Trump's signature campaign promise of having Mexico fund the wall will forever be broken. The incomplete, inconsistent and ineffective wall will be a bigly momument to Trump's inexperience and broken campaign promises.