Lots of other sites with info......
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The Army Corps of Engineers is the executive agent for DOD’s border wall
construction. In April and May, the Corps awarded about $2.5 billion in
projects to build a portion of the wall that will span 129 miles in New Mexico,
Arizona and California, Hoffman said.
As of this week, virtually all of that $2.5 billion has been obligated and is
on contract, and officials expect to have the remaining $3 million obligated
before the end of this month, he said.
https://www.defense.gov/explore/story/Article/1965907/dod-spokesman-provides-border-wall-update/
Hoffman said the Department of Homeland Security has the lead on prioritizing
which sections of wall get built first. “We’re working on their priorities,”
he said. “We’re relying on border patrol agents on the ground, the people
who have the most knowledge, to tell us where the border wall should be built.”
Building the wall takes time, Hoffman said. Besides the actual construction,
other factors include planning, buying property and doing environmental
assessments. Once those are completed, he said, the construction itself can
be rapid.