Treasury Making Trump Taxes Available To House Committee

The House Ways and Means Committee has obtained six years of tax returns from former President Trump, provided by the Treasury Department. Trump did not release these returns during his presidency. The committee is primarily interested in examining the IRS audits of Trump's returns during his time in office. Trump attempted to prevent the release by appealing to the Supreme Court, but the court chose not to intervene.

Why does the committee mainly want Trump's tax returns from his time in office?

What was the outcome of Trump's request to block the release of his tax returns?