U.S. stock futures declined on Monday after a positive close on Friday. Futures of major benchmark indices were trading lower.Tensions flared up at the Federal Reserve after the Chair Jerome Powell said on Sunday that the Department of Justice had threatened the central bank with "criminal indictment" over his testimony before Congress, relating to its building renovation costs. This marks a major escalation in tensions between President Donald Trump and the central bank. On Friday, nonfarm payrolls increas ...