“I got in that fight because they just didn’t have anyone,” Ms. Warren said, “and Joe Biden was on the side of the credit card companies.”
But that proved to be more of an isolated note. Throughout the 2019 debates, Ms. Warren avoided directly confronting Mr. Biden about their past tangles. She has also stayed away from attacking Senator Bernie Sanders, the other front-runner in the race, who has cut into her progressive support.
In the Senate, Mr. Biden had represented Delaware, a favorite state of the credit card industry, and supported the 2005 bankruptcy legislation that Ms. Warren opposed. When she testified before his committee, he called her argument “mildly demagogic.”
She urged him to address exceedingly high interest rates as well as bankruptcy protections.
“If you’re not going to fix that problem,” Ms. Warren told Mr. Biden of interest rates, “you can’t take away the last shred of protection for these families,” she said, referring to bankruptcy.
“You’re very good, professor,” Mr. Biden replied.
Later, when Mr. Biden swore Ms. Warren into the Senate in 2013, he could be heard good-naturedly telling her, “You gave me hell.”
In her plan on Tuesday, Ms. Warren called the 2005 bill “terrible for families in need” and noted that bankruptcy filings plunged “permanently” by 50 percent.
“I lost that fight in 2005, and working families paid the price,” she wrote.
The package does not mention Mr. Biden by name.