One of Donald Trump's official delegates to the Republican National Convention has been indicted for child pornography, illegally owning a machine gun, and illegally trying to mail explosives through the US Postal Service, Huffington Post's Christina Wilkie reports.

Caleb Andrew Bailey, a 30-year-old man from Waldorf, Maryland, faces four federal charges that could put him in prison for upward of 30 years, according to a statement from the Department of Justice. In April, Bailey, who is also the son of the former vice president of the state's Republican party, was selected as one of Trump's delegates, when Trump won the state by more than 20 points.

Federal investigators were tipped off to Bailey's illegal activities in February after he attempted to post a package of explosives to Wisconsin and called the postal office multiple times to track the status of his sent mail.

Authorities raided Bailey's residence in May, seizing an illegally owned machine gun. Bailey has also been indicted for producing child pornography for distribution as well as possessing child porn.

Trump's campaign responded to the allegations, censuring Bailey for his actions.

"We strongly condemn these allegations and leave it in the capable hands of law enforcement. He will be replaced immediately," Trump's campaign told Fox News reporter Ronica Cleary.

This keeps happening to Trump association

This isn't the first time a Trump delegate has come under scrutiny: Just last week the presumptive Republican nominee listed a self-pronounced white nationalist as a would-be delegate in California.

The Trump campaign chalked up the incident as a "database error" that included a delegate already "rejected and removed" from the campaign's list.

And as it becomes increasingly clear that Trump's campaign needs a more thorough vetting process for its delegates, it has also become notably apparent that the Republican candidate has an association problem.

In the same week Trump accidentally picked a white nationalist delegate in California, a former Ku Klux Klan grand wizard offered to be Trump's vice president and news broke that his former butler repeatedly said on Facebook that he wanted to see President Barack Obama dead.

It’s a particularly challenging situation for Trump, who has repeatedly said his qualification for the White House is based largely on his ability to call on the "great" and "best" to represent and advise him.