• AUD/USD drops to 0.7138, its lowest level since September 2

• U.S. dollar stronger on hawkish shift in Fed expectations

• Growing consensus Fed to raise rates this week, and again in December

• Ahead of Fed meeting, Trump says U.S. should have world's lowest interest rate

• 0.7122 (Sept 2 low) and 0.7100 are AUD/USD support points

• CFTC data: net AUD short shrank by 11% to 34,870 contracts in week to Sept 8

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(Robert Howard is a Reuters market analyst. The views expressed are his own)