New York (CNN Business) Wells Fargo CEO Tim Sloan says the bank has changed and abandoned its scandalous past. But Congress has its doubts.

Sloan will face skeptical lawmakers when he testifies in front of the House Financial Services Committee on Tuesday. He'll try to convince House members that Wells Fargo has become a "better bank," according to prepared remarks.

Wells Fargo WFC The CEO plans to lay out howhas addressed the aggressive sales tactics that led to the creation of millions of fake accounts and other issues, such as charging thousands of customers for auto insurance they didn't need and imposing unwarranted mortgage fees on homeowners.

On Monday, the bank released a progress report detailing its "transformation" since September 2016. It highlighted leadership shakeups at the company and new measures aimed at curtailing risk.

"While we have more work to do, we've worked hard over the past two years to address the root causes of our mistakes, make things right for team members and customers, and lay the foundation for a better company," Sloan said in a press release.

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