Rainier Ehrhardt/AP Photo
Candidate's campaign admits arrangements would't qualify under federal rules.
PHOTO: Republican presidential candidate and former Massachusetts Gov. Mitt Romney speaks during a campaign rally at Wofford College on Jan. 18, 2012 in Spartanburg, South Carolina.
Romney Parks Millions in Cayman Islands Candidate says he pays full US taxes on offshore money.
PHOTO: Dominic Chavez/The Boston Globe via Getty Images
Romney Sent Millions to Mormon Church Scope of Romney gifts to Mormon church unknown.
PHOTO:??Labor organizer Randy Johnson was among the 385 blue-collar workers who
lost their jobs
Fired Factory Worker Calls Mitt Romney a Job Killer Randy Johnson tells ABC News about flip side of Bain Capital's success.
Romney Cash Invested With GOP Whale Billionaire Paul Singer is GOP's "most wanted" donor, hasn't committed.
VIDEO: Fired factory worker tells ABC News about flip side of Bain Capitals success.
Romney Critic Resurfaces Fired factory worker tells ABC News about flip side of Bain Capital's success.
VIDEO: Can voters relate to Mitt Romney, a candidate with a quarter-billion-dollar fortune?
Mitt Romney: The Wealth Factor Can voters relate to a candidate with a quarter-billion-dollar fortune?
Rick Santorum
PHOTO: Republican presidential hopeful and former U.S. Sen. Rick Santorum
Santorum Surge Brings Ethics Questions Santorum got special mortgage from bank run by campaign donors.
PHOTO: Rick Santorum addresses supporters at his Iowa caucus victory party, Jan. 3, 2012, in Johnston, Iowa.
Rick Santorum, 'Stealth Lobbyist' GOP candidate earned millions after leaving Senate in 2006.
Newt Gingrich
Gingrich in 'World of Trouble,' Says Tax Expert Newt Gingrich calls ABC News report 'hit piece,' says he abided by tax laws.
PHOTO: Former Speaker of the House and Republican presidential candidate Newt Gingrich speaks during a forum on manufacturing, Nov. 1, 2011 at Vermeer Manufacturing in Pella, Iowa.
The Lucrative Business Of Running For President Is Newt Gingrich in it to win it -- or to get paid?
Newt Gingrich Charity Paid Cash To Gingrich For-Profit Business Gingrich charity seems 'designed to skirt rules,' says watchdog.
VIDEO: Newt Gingrich: Candidate or Brand?
Newt Gingrich: Candidate or Brand? Is Gingrich cashing in while running for president?
Michele Bachmann
Ex-Insider: Bachmann Headaches Frequent, Left Her 'Unable to Function' 'Close the doors, shut the lights,' regular calls to House medical office.
Bachmann: Migraines Controlled By Medication Presidential candidate says migraines would not affect ability to serve.
Exodus Intl. Head Alan Chambers Compares Homosexuality to Obesity Says that turning gays straight is like going to Weight Watchers.
Michele Bachmann Silent on Allegations Her Clinic Offers Gay Conversion Therapy Clinic candidate owns with husband accused of discredited, dangerous practice.
Herman Cain
Cain Camp Wants Phone Records Ginger White claims 13-year affair with presidential candidate Herman Cain.
PHOTO: Kimberly Vay competes in a national bodybuilding competition in 2011.
Former Business Partner: Ginger White Never Mentioned Herman Cain Kimberly Vay mum on Cain accuser's cred, but says 'my lawsuit' speaks for itself
PHOTO: Atlanta businesswoman Ginger White
Herman Cain Accuser Not Surprised at Cain's Denial Ginger White claims to have had a 13-year affair with GOP candidate.
PHOTO: Atlanta businesswoman Ginger White
Newest Cain Accuser Has History of Financial Trouble Ginger White claims 13-year affair with GOP candidate.
PHOTO: Karen Kraushaar speaks to the media during the Elian Gonzalez controversy.
Herman Cain Could Be Described as a 'Monster,' Accuser Says Most recent woman to come forward wants to band together with other accusers.
PHOTO: Republican presidential candidate and former CEO of Godfathers Pizza Herman Cain participates in a discussion with members of the Congressional Health Care Caucus on Capitol Hill, Washington, DC, Nov. 2, 2011.
Cain Says 'Democrat Machine' Out to Get Him GOP frontrunner calls accuser Bialek 'troubled,' says he doesn't remember her.
PHOTO: Karen Kraushaar speaks to the media during the Elian Gonzalez controversy.
Cain Accuser: 'Not the Way I Wanted to Get My 15 Minutes of Fame' Kraushaar says her allegations should be considered part of "body of evidence."
PHOTO: Sharon Bialek, Herman Cain Accuser,  Appears on Good Morning America with her lawyer Gloria Allred, Nov. 08, 2011.
Cain Accuser: 'I Was Not Paid to Come Forward' Herman Cain camp references Sharon Bialek's "severe financial difficulties."
PHOTO: Sharon Bialek
Chicago Woman Claims Herman Cain Wanted Her to Trade Sex for Job Sharon Bialek says she wants to 'give a face' to Cain's accusers.
PHOTO: Republican presidential hopeful Herman Cain speaks at the Western Republican Leadership Conference at The Venetian,Las Vegas, Nevada in this Oct. 19, 2011 file photo.
Cain Accuser May Issue Statement Today Cain supporters invoke Clarence Thomas, 'high-tech lynching.'
PHOTO: Republican presidential candidate Herman Cain participates in a discussion with members of the Congressional Health Care Caucus on Capitol Hill Nov. 2, 2011 in Washington, DC.
Reports: One Cain Accuser Got $45K, Other Got $35K Maryland woman won't go public, but third accuser surfaces.
PHOTO: Republican presidential candidate Herman Cain pauses as he speaks at the Congressional Health Caucus Thought Leaders Series, Capitol Hill, Washington DC, Nov. 2, 2011.
Who Are Herman Cain's Accusers? Md. Woman Works For Federal Government; N.J. Woman Works in Politics