Schumer actually cares about people crossing legal lines?
Mr. Schumer apparently missed some classes at Harvard Law School about the rights of accused. The sixth amendment grants to defendants the right to know the identities of their accusers. The fourth amendment gives protection against unreasonable searches and seizures by government, “The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated”. The FBI placing a spy inside someone’s organization is an unreasonable search. The sixth amendment would seem to prevent the government from keeping the name of an accuser (the spy) secret from the accused.
In addition Mr. Schumer, as a long time member of the Senate, certainly knows Congress has oversight authority over federal agencies and the bureaucrats employed by them.
Certainly there are federal laws governing behavior of law enforcement officials becoming involved in campaigns for federal office. It is hard to imagine there are not federal laws restricting federal officials from interfering in campaigns and using surveillance to extract information from a campaign.
Searches and seizures are allowed only with a warrant. Given the Constitution’s obvious bias toward transparency in criminal investigations, it is difficult to understand how the secret FISA courts are Constitutional. Probable cause is required to secure a warrant and there has yet to be made public and actual crime alleged to have been committed by the Trump organization (collusion is not a crime) nor has any evidence been communicated to the public which would demonstrate probable cause sufficient for a judge to authorize a search or spy mission. A manufactured dossier and unsubstantiated press reports do not constitute sufficient evidence for probable cause.
As to obstruction of justice, from all news accounts the Trump campaign and Trump officials have been very forthcoming in responding to DOJ, FBI, Congressional and special counsel requests for information. The only potential obstruction of justice accusation against Mr. Trump is his firing of James Comey as head of the FBI. That firing occurred after due process within the Justice Department (both Rosenstein and Sessions recommended the firing). Even without the concurrence of the Justice Department, Trump has the Constitutional power to fire senior members of the federal government at any time for any reason he chooses.