The New York Sun points out that the findings of the Inspector General's report, bad as they are, are part of a long series of improper actions.
https://www.nysun.com/editorials/it-seems-trump-was-right-to-fire-james-...
The Conservative Caucus is a public policy organization, contributions to which are not tax deductible. The IRS has determined TCC to be a 501(c)(4) organization, exempt from Federal income tax. TCC can receive corporate donations.