Neal Katyal suggests House defund the Office of Atty General until release of report.

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69. All appropriations do not necessarily start in the House

All revenue raising measures must, per Article I, Section 7 of the Constitution, originate in the House --- "All bills for raising revenue shall originate in the house of representatives; but the senate may propose or concur with amendments as on other bills."

It is a common misunderstanding that the Constitution requires appropriations (spending) bills to originate in the House. That misunderstanding arises because, as a matter of tradition, the Senate usually defers to the House. But even when that is the case, there is nothing that prevents the Senate from amending the bill that originated in the House to add or delete provisions as they choose.

Indeed, the Senate doesn't even have to wait for the House to act on its bill before starting work on its own appropriations measures. It is more common than not for the Senate, even if it introduces its appropriations bills after the House does, to introduce those measures within days of the House and to consider them independently of the House.

To give one relatively recent example, a FY2019 Transportation, HUD, et al Appropriations bill was introduced in the Senate (S3023) on June 7, 2018. The House introduced a FY2019 Transportation, HUD et al Appropriations bill (HR6072) five days later on June 12, 2018.

The bottom line is that there is no way to "de-fund" the Office of the Attorney General without the concurrence of both houses of Congress, which isn't happening and, thus, a House passed measure trying to accomplish that end will never become effective and would be a total waste of time.