(The Federal Tort Claim Act’s discretionary function immunity did not shield the United States from liability for the alleged conduct of its employees in maliciously instigating false state court criminal charges against plaintiff (in retaliation for her whistleblowing).  The employees’ alleged conduct in knowingly lying under oath, tampering with witnesses, or fabricating evidence to support the false criminal charges had no role in the legitimate functioning of government and did not constitute a policy judgment susceptible to social, economic, or political analysis. Hence, it was not protected by the discretionary function exception.)