The FBI investigation of the Trump campaign soon learned the charges were false, but kept spying on the Trump campaign.
https://thehill.com/opinion/judiciary/473709-horowitz-report-is-damning-...
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.