Why the hell do SPAIN and PORTUGAL care about our borders?

Am I reading too much into this, or is there something deeper going on here?

Latin Leaders Set to Condemn U.S. Border Fence

A draft of a final declaration by the leaders of Spain, Portugal and Latin America gathering in Montevideo includes a special statement rejecting the fence plan.

“We express our deep concern over the decision adopted by the government of the United States,” it reads, adding regional leaders want to “make a firm call for the United States to reconsider” its decision.

Maybe it’s just something that came up during this meeting of Spanish-speaking countries, and Spain and Portugal seeing it as an opportunity to support their trading partners with a relatively meaningless signature on a relatively meaningless document.

Either way, it continues to amaze me; not that other countries seek to affect our internal security policies, but that people who consider themselves Americans listen to and agree with them.