Hope House offers a safe, secure and comfortable place for women to recover from substance dependence and receive additional support for other compulsive disorders.
It is the first time Kate has been seen in public after photographs of her on holiday in Mustique were published by foreign media.
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In an embarrassing setback for the president, Republicans failed to reach the number of votes to pass his new healthcare act into law.
It will feel pleasantly warm in the sunshine, with temperatures reaching 12 or 13 Celsius (54 to 55F).
Some of Britain's biggest stars of the stage and screen will be honoured at Buckingham Palace later today.