Billionaire and GOP presidential hopeful Donald Trump says he's being audited by the IRS, and has been audited annually for the better part of past 12 years. 

"Nobody would ever put out their returns that's under an audit," he explained during last night's Republican debate in Houston, Tex. "You're in the midst of negotiating and talking to the IRS." He also went on to suggest that the audits have something to do with his being a "strong Christian." 

Some analysts find Trump's claims to be suspicious. "The notion that you're audited every year is somewhat strange," said Frank Degen, the former president of the National Association on Enrolled Agents, in an interview with the Wall Street Journal. 

Of course, the vast majority of American earners don't need to be too concerned about getting hit with an IRS audit. Generally speaking, the federal government keeps a close eye on the ultra-wealthy. In 2010, former IRS commissioner Douglas Shulman told the New York State Bar Association, referring to a "game-changing strategy," that they plan to initially focus on "individuals with tens of millions of dollars of assets or income." 

Still, as many as one in ten of those $1 million-plus earners were audited by mail in 2015, compared to just 7.5 percent in 2014, according to recent data. 

Trump isn't the first high-profile U.S. figure to rub elbows with Uncle Sam, and he likely won't be the last. As the April 15th deadline to file your taxes for the 2015 fiscal year fast approaches, here's a round-up of some celebrities who've been audited by the IRS (some of whom even faced federal charges for tax evasion). 

1. Martin Scorcese

The Oscar-winning film director faced a massive $2.85 million tax lien from the IRS in 2011, which may have been connected to his dealings with Kenneth Starr, who was convicted of running a $25 million Ponzi scheme with scores of high net-worth clients that same year. 

2. Gisele Bündchen

In 2014, the Brazilian fashion model blamed Forbes, which published an estimate of her earnings in 2012, for her being audited by the IRS. "I earn plenty, but not as much as they say," she said at the time.  

3. Martha Stewart 

The entrepreneur and celebrity homemaker was audited by the state of New York, and ultimately forced to pay $220,000 in back taxes and penalties on an East Hampton mansion back in 1994. She argued that because she didn't spend much time there, she shouldn't have to pay taxes on it. 

3. Lionel Richie

In 2012, the famed singer faced a $1.1 million IRS tax lien for unpaid taxes. 

4. Robin Thicke and Paula Patton 

A celebrity couple, the "Blurred Lines" singer and Hollywood actress were hit with a federal lien in 2012, alleging they owed $493,000 in income taxes. However, the lien was lifted by May. 

5. Christie Brinkley 

In 2011, the IRS filed a staggering $531,720 lien on the actress' estate in Bridgehampton, N.Y. "I regret not paying attention to my accounting," Brinkley said at the time. 

6. Lil Wayne

The rapper has run up against the IRS several times over the course of his career, including in 2014, when the body alleged that he owed more than $12 million for fiscal years 2011 and 2012. (He'd previously paid off  $1.13 million for back taxes in 2010, and another $7.72 million in 2012.) 

7. Willie Nelson

The musician and self-proclaimed marijuana advocate had his property seized back in 1990, when the IRS claimed that he owed $16.7 million in back taxes. 

8. Al Pacino

The IRS came down on the Hollywood director for owing $188,000 in unpaid taxes for fiscal years 2008 and 2009, and he another $32,000 to the state of California. 

9. Lindsay Lohan

The actress has had a slew of run-ins with Uncle Sam, culminating when the IRS seized her bank accounts in 2013. 

10. Wesley Snipes 

The actor and film producer served three years in prison after being convicted of tax evasion in 2008.