Yes.
Notice a pattern?
The 22-month Mueller investigation, which was a "witch hunt" which uncovered all manner of evidence and
[T]he investigation resulted in charges against 34 individuals and 3 companies, 8 guilty pleas, and a conviction at trial.[7][8]
(Emphasis added; see https://en.m.wikipedia.org/wiki/Special_Counsel_investigation_(2017%E2%80%932019)) Additionally,
A cost–benefit analysis of the investigation shows a net benefit for the government, with far more income than expenses.
By December 2018, the investigation had cost approximately $32 million[149] but gained approximately $48 million. More than half of the cost of the investigation was for personnel compensation and benefits. The gains were accrued primarily by uncovering unpaid taxes by targets in the investigation, seizing assets, and collecting fines.[150]
(Ibid.)OTOH, consider the Benghazi investigations:
Ten investigations were conducted into the 2012 Benghazi attack, six of these by Republican-controlled House committees. ...[Though problems were identified, d]espite numerous allegations against Obama administration officials of scandal, cover-up and lying regarding the Benghazi attack and its aftermath, none of the ten investigations found any evidence to support those allegations.[2][3][4][5] The last of the investigation committees issued its final report and shut down in December 2016, one month after the 2016 presidential election.[6][7][8]
(Emphasis added; see https://en.m.wikipedia.org/wiki/Investigations_into_the_2012_Benghazi_attack)No one was convicted or even charged. LOTS of taxpayer money was wasted.
