Waters said she didn't know the bank was asking for government assistance when she arranged a meeting with the treasury secretary.
The congresswoman said she only wanted to intervene on behalf of minority-owned banks.
Waters stood her ground when she spoke on "Good Morning America."
"The fact of the matter is if you're accusing me of influence to get them TARP money, when in fact, there was no TARP money involved when I arranged access for the trade association, the MBA, to meet with the treasurer, that's not a question that deals with this case at all," said Waters.
Waters also accused the congressional ethics office of doing "sloppy work." She faces three violations and could stand trial in the fall.