Obama can't escape crowds during vacation to Martha's Vineyard, Mass.

United States President Barack Obama waves to the crowd after visiting the Bunch of Grapes Book Store with his daughters during their vacation on Martha's Vineyard, in Vineyard Haven, Mass. on Aug. 19.

Obama shakes hands with an enthusiastic crowd on Martha's Vineyard in Mass. On Aug 19.

The motorcade of United States President Barack Obama leaves the Blue Heron Farm on Martha's Vineyard, in Chilmark, Mass. on Aug 19.