while these segments have been repaired, I don't know of new construction, given Congress has not authorized more than a small amount $$ in the last budget (omnibus spending bill). Trump believed Fox news (Coulter et al) when they claimed that he could just use the military budget to fund (and he CAN NOT).
You can read about current status here: https://fairus.org/issue/national-security/current-state-border-fence
BUT, BE AWARE, SPLC has made it clear that this is a group masquerading as looking for "fair" solutions, but actually engaged in anti-immigrant lobbying. Their info may be accurate (probably no more biased than the Border Patrol's website), but beware their motives. Here's what SPLC had to say about them:
The Federation for American Immigration Reform (FAIR) is a group with one mission: to severely limit immigration into the United States. Although FAIR maintains a veneer of legitimacy that has allowed its principals to testify in Congress and lobby the federal government, this veneer hides much ugliness.
https://www.splcenter.org/fighting-hate/extremist-files/group/federation-american-immigration-reform
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