Did Mrs. Clinton’s Campaign Checks Bounce?

Is Mrs. Clinton’s campaign issuing rubber checks?

“An honest politician is one who, when he is bought, will stay bought.” 

Simon Cameron ^[1]

All those many endorsement checks and to what end.  Mrs Clinton’s problem is that her supporters will not stay bought:

(CBS ^[2]) CHICAGO Senators Barack Obama and Hillary Clinton are just beginning their presidential campaigns, but a poll says there has already been a major shift among African-American voters.

It would seem strange for a campaign awash with millions to have their checks returned NSF.