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Following this week's quarter-point Federal Reserve rate hike to a range of 3.75%-4.0%, Fed official Kevin Warsh's remarks explaining the decision left Wall Street parsing how much further the central bank might raise rates. Analysts noted his comments raised as many questions as they answered about the Fed's next moves. Separately, commentary highlighted that the Fed's inflation target keeps getting pushed further into the future, adding to uncertainty about the central bank's policy trajectory.