(CNN) - Sen. Barack Obama and his wife, Michelle, each donated $2,300 Thursday to the campaign of his former opponent, Sen. Hillary Clinton, which is millions of dollars in debt.
In addition, Obama's national finance chairman, Penny Pritzker, and her husband donated another $2,300 each, said Obama communications director Robert Gibbs. The $2,300 is the maximum individual contribution allowed.
"[Obama] wrote a check himself, as well as his finance chairman, so I got two checks in my pocket for Hillary," said Clinton adviser Terry McAuliffe.
Asked how much the checks were for, he responded, "They maxed out."
Obama communications director Robert Gibbs confirmed the Obamas' donations.
The move comes nearly three weeks after Clinton suspended her campaign and endorsed Obama, the presumptive Democratic presidential nominee.