The investigation of Rangel has focused on:
_His use of official stationery to raise money for the Charles B. Rangel Center for Public Service at City College of New York.
_Whether he had the Ways and Means Committee consider legislation that would benefit donors to the Rangel Center at the same time the congressman solicited donations or pledges.
_Preservation of a tax shelter for an oil drilling company, Nabors Industries, which has a chief executive who donated money to the center while Rangel's committee considered the loophole legislation.
_Use of four rent-controlled apartment units in New York City, when the city's rent stabilization program is supposed to apply to one's primary residence. This raises the question of how all the units could be primary residences. One was a campaign office, raising a separate question of whether the rent break was an improper gift.
_Whether Rangel, as required, publicly reported information on the financing and rental of his ownership interest in a unit within the Punta Cana Yacht Club in Punta Cana, Dominican Republic. Rangel also had to pay back taxes on the rental income.
_Whether he intentionally failed to report — when required — hundreds of thousands of dollars or more in assets. The amended disclosure reports added a credit union IRA, mutual fund accounts and stock.