Desperate to bolster his sagging numbers with Latino voters, Donald Trump is set to soon embark on a "Hispanic engagement tour."

Appearing on a recent Fox News show, Republican National Committee chairman Reince Priebus acknowledged Trump's struggles with Latino voters, which have been largely fueled by his vow to deport millions of immigrants and build a wall along the Mexican border.

"We have a long way to go," said Priebus. "Donald Trump is committed to making that happen."

That may be easier said than done.

Trump Latino Support at Historic low

A new NBC News/ Wall Street Journal/Telemundo poll finds just 14 percent of Hispanics back Trump in a head-to-head battle against Hillary Clinton, with 82 percent of Latinos insisting they have an unfavorable view of the presumptive GOP nominee.

By comparison, only 25 percent of Latinos insist they have a negative view of Clinton and in election's past GOP candidates Mitt Romney, John McCain and George W. Bush all averaged 33 percent of the Latino vote.

Not helping matters where the current candidate is concerned is the GOP's recent move to adopt his border wall as a rung of the party's platform.

During a recent subcommittee hearing, GOP leaders successfully campaigned, handed out to delegates slated to be on hand for this month's party convention in Cleveland, changed to read, "That is why we support building a wall along our southern border and protect if all ports of entry."

Trump's Hardline Stance on Immigration

Trump marked the launch of his campaign by blasting Mexican as criminals and drug dealers. Since then, the party's presumptive nominee has also vowed to have Mexico foot the bill for the wall he plans to erect if he is elected.

Still, Priebus sought to assure Latino voters Trump understands their concerns and the GOP is "the party of the open door, tone, rhetoric, spirit - all of those things matter."

Priebus mentioned such diverse states as Nevada and Florida as states he's convinced Trump can come to do well in.

Added top Trump aide Paul Manafort: "We are not isolating our campaign to just segments of the population. We're going to be focusing on all of society."

Back in the early 1900s, Republicans consistently drew as much as 30 percent of the black vote, but nowadays that figure has dwindled to the single digits.

Given all Trump's fiery rhetoric, many now worry the GOP is on the verge of suffering a similar long-term fate with Latino voters.

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