Minnesota Gov. Tim Pawlenty and his wife, Mary, appear with Republican presidential candidate John McCain in St. Paul on July 10.

"I had 10 or 15 people on my team: two-thirds lawyers, a couple accountants, a couple regular people. We looked at taxes and financial statements, political positions and, the most distasteful part, personal behavior." —Washington lawyer Lanny Davis, who vetted people for President Clinton Enlarge By Alex Brandon, AP Democratic presidential candidate Barack Obama shakes hands with Sen. Evan Bayh, D-Ind., in Portage, Ind., on Wednesday. WASHINGTON  Indiana Sen. Evan Bayh, who campaigned last week with Barack Obama as news stories weighed his vice presidential prospects, is a blank slate to most Americans. So is Minnesota Gov. Tim Pawlenty, who deflected questions about running with John McCain during a recent appearance at the National Press Club. At the same time, teams of lawyers, accountants and other campaign aides are learning a lot about them. Known to the campaigns as "vetters," they are combing through the tax returns, campaign-finance reports, financial disclosure statements and other personal information of potential VP picks. They are sworn to secrecy as they search for a hidden time bomb that could derail a presidential campaign. One goal: Determine "how the crazy, cynical left or right of the (political) spectrum is going to misuse the information," said Washington lawyer Lanny Davis, who vetted Cabinet candidates, including Janet Reno, who became President Bill Clinton's attorney general. "I had 10 or 15 people on my team: two thirds lawyers, a couple accountants, a couple regular people," Davis said. "We looked at taxes and financial statements, political positions and, the most distasteful part, personal behavior." Former Iowa governor Tom Vilsack, who was vetted by Democratic nominee John Kerry's campaign in 2004, said he was asked for "every piece of paper I could put my hands on," from his state Senate voting records to the budgets he had submitted as a city mayor. The vetters also wanted local newspaper columns written by his wife, as well as their health records and tax returns. "We turned over 30 banker boxes full of material to a law firm in D.C.," he said, before sitting down for a seven-hour interview with vetters and then a two-hour dinner with Kerry, who ultimately selected North Carolina's John Edwards. The Obama and McCain campaigns won't discuss the process or even confirm who is being examined. McCain's VP search is being run by Washington lawyer A.B. Culvahouse, while Obama's is supervised by Caroline Kennedy and Eric Holder, a former senior Justice Department official. Issues of ethics and campaign finance are likely to receive particular scrutiny because Obama and McCain are self-described reformers who set unusually strict ethical standards for their campaigns. McCain prohibits lobbyists from working as paid campaign staffers, while Obama refuses campaign contributions from political action committees and federal lobbyists. Some issues involving potential running mates that the vetters may be mulling: •Bayh's wife, attorney Susan Bayh, has earned $1 million a year in recent years, and nearly $2 million in stock options, through her service on 10 corporate boards, according to TheJournal-Gazette of Fort Wayne, Ind., including drug and insurance companies that have been denounced by Obama as overly powerful special interests. Bayh spokesman Eric Kleiman said Susan Bayh has a right to her own career, and that Bayh and his aides do not allow themselves to be lobbied by representatives of the companies on whose boards his wife serves. •Pawlenty amended his financial disclosure forms in 2003 after revealing that a businessman had paid him $4,500 per month — a total of $60,000 — for legal consulting while he was campaigning for governor in 2002. He had listed his consulting business, BAMCO and Associates, as an investment on the state form designed to disclose his income. State campaign officials and local prosecutors quickly absolved him of any wrongdoing after Democrats charged the payments amounted to illegal campaign contributions. The allegations "were deemed to be without merit," Pawlenty spokesman Bob Schroeder said. •Virginia Gov. Tim Kaine accepted a $12,000 trip to a Democratic governors meeting in Aspen, Colo., in 2006 from Barr Labs, a drug company with a large presence in his state, according to his financial disclosure statements. He also let Dominion, a Richmond-based energy company, spend $1,356 to pay his way to the NCAA basketball tournament in Indianapolis and conferences in West Virginia and New Orleans, the records show. In a state with no limits on campaign giving, he has accepted $660,000 in three years from a single donor, billionaire venture capitalist Randal Kirk, records show. Kirk, who was given the state's Outstanding Industrialist Award in April by Kaine and the Science Museum of Virginia, told USA TODAY he does no business with the state. A Kaine spokeswoman, Delacey Skinner, said Kaine is not influenced by political contributions. The trips were within the rules, she said. •Rep. Eric Cantor, R-Va., has been a prolific fundraiser from the lobbyists and interest groups that McCain says hold too much sway in Washington. In 2006, he donated to charity $10,000 he had received from disgraced lobbyist Jack Abramoff, who had named a sandwich after Cantor at a deli he owned, according to the Jewish newspaper The Forward. McCain helped expose the Abramoff scandal. Rob Collins, Cantor's chief of staff, pointed out in an e-mail that Abramoff funded a group that attacked Cantor during the 2000 primary. "Cantor or his staff never met officially with or did any actions for Jack Abramoff," he said. Guidelines: You share in the USA TODAY community, so please keep your comments smart and civil. Don't attack other readers personally, and keep your language decent. Use the "Report Abuse" button to make a difference. You share in the USA TODAY community, so please keep your comments smart and civil. Don't attack other readers personally, and keep your language decent. Use the "Report Abuse" button to make a difference. Read more