Wood chips come from the interior of a tree. This mulch is available as hardwood or softwood, or as a mixture. Hardwood mulches, according to Fine Gardening, will last a little longer than softwood mulches. Wood chips, in general, do not last as long in the landscape as bark mulches.
There have been more Republican presidents than Democratic presidents. Between 1789 and 2013, 43 people have been sworn into office as the president of the United States of America. Of these, a larger number have belonged to the Republican Party than have belonged to the Democratic Party.
And party links do not help much either. The president and the majority of Congress may be of different parties, as was the case during the last two years of George W. Bush's presidency (2007-2008), with a Republican president but the Democrats controlling both houses of Congress.