"How can you get a warrant to spy on a campaign by spying on campaign official(Page) who had contacts with a Russian, but purposely leave out that that person (Page) was reporting to the intelligence community about these contacts on an ongoing basis."
Easy. You base it entirely on what a completely different campaign official (Papadop) reportedly said to a well-connected foreign source (Downer) about what an intelligence operative (Mifsud) primed him with.
That enables you to spy on the whole Presidential campaign. Simples.
