Motley:  Here's a definition of infrastructure:  "Infrastructure - Wikipedia
https://en.wikipedia.org/wiki/Infrastructure
Infrastructure refers to structures, systems, and facilities serving the economy of a business, industry, country, city, town, or area, including the services and facilities necessary for its economy to function.
‎Public infrastructure · ‎Infrastructure asset management · ‎Hard infrastructure"  Twenty-five billion spent on a "wall" to keep out illegal immigrants hardly qualifies as infrastructure. It's estimated that "illegal immigrants" now hold about  5% of the jobs in America.  That percentage has held quite level....we're NOT losing more and more jobs to illegal immigrants..if anything, the percentage is dropping.  

Building the "wall" will provide construction jobs for a limited time.  It will also cost taxpayers that twenty-five billion dollars.  It would be far more constructive to spend that 25 on genuine infrastructure repair, replacement and expansion.