They also withheld exculpatory evidence at the time of requesting the warrant, and relied on a fictional document paid for by the opposing political party.
This was used as a basis to conduct a 2 year long investigation into collusion between the campaign and the Russian government, which resulted in the conviction of Michael Cohen for tax evasion and perjury, and Paul Manafort for tax fraud, bank fraud and conspiracy all of which predated the campaign and had nothing to do with it.
Not only are these agencies spying based on fabricated evidence, they are using the spying to kick off independent investigations, each of which unveil various unrelated crimes, which they then prosecute.
The whole system is rotten to its core.