I understand that some don't want the Texas border closed because the traffic will shift back to Arizona and California - but that's a risk we can prepare for. An incoming republican president will see to Texas being reimbursed. Or we all can sit here as 2016 comes and goes, waiting for Zero to agree to pay half.
First you need to look at as border enforcement, interior enforcement, and workplace enforcement.
Then you can break it out as under Clinton, under Bush, and under Obama.
Then break it out as enforcement only or immigration reform plus enforcement.
Then break it out as the US House versus the Senate. The Senate has the prerogative of immigration but the House has the prerogative of law enforcement and the prerogative of revenue
Break it out as Mexican border states, Canadian border states, Coastal States, other states.
Illegal ag workers(H2A) and illegal non ag workers(H2B)
States versus the Feds.
It a very complicated issue with many moving parts