LinkedIn cofounder Reid Hoffman is the latest Silicon Valley mogul to put some of his personal fortune on the line this election season with a promise to donate $5 million to veteran affairs groups if Donald Trump agrees to release his personal tax returns.。

SEE ALSO:Trump’s cozy relationship with Breitbart gets even cozier with big hire 。

Hoffman is taking his cue from a crowdfunding campaign launched by U.S. Marine veteran Pete Kiernan, who is hoping to raise $1 million for the same purpose.。

The networking site entrepreneur said he'd add his own $5 million to the pot as soon as the campaign hit its goal. As of Monday afternoon, the total raised sits at just over $6,000.。

Kiernan wants Trump to be held to the same standards as members of the U.S. military, who must undergo rigorous background checks to ensure they're fit for service. 。

"Trump claims to love veterans," Kiernan writes. "So we’re asking him to put his money where his mouth is." 。

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Hoffman, whose net worth was boosted substantially when Microsoft acquired his site earlier this year, pointed out in a Medium post that the $5 million he pledged is the same amount Trump offered Obama for his college records and passport applications during the 2012 presidential election. 。

"There’s no real reason that Trump is keeping his returns secret, except that he sees them as a bargaining chip to utilize," Hoffman writes.。

"In a functioning democracy, the public shouldn’t be forced to bargain with a major presidential candidate to obtain access to his tax returns."。

The matter of what may or may not be hidden within Trump's tax returns has become a sticking point this election as the GOP candidate has consistently refused to release them. Historically, doing so is customary for presidential candidates. 。

Hoffman isn't the first big name in the industry to publicly throw their weight behind a candidate. Facebook cofounder Dustin Moskovitz took aim at Trump last week with a $20 million donation to various Democratic groups. 。

Meanwhile, billionaire venture capitalist Peter Thiel, ever the eccentric outlier, has campaigned ardently for Trump, even going so far as to speak at the Republican National Convention.。

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