"Brain" joke

A British doctor says "Medicine in my country is so advanced that we can
take a kidney out of one man put it in another and have him looking for work
in six weeks."
A German doctor says, "That`s nothing, we can take a lung out of one
person put it in another and have him looking for work in four weeks."
A Russian doctor says, "In my country medicine is so advanced we can take
half a heart out of one person put it in another and have them both looking
for work in two weeks."
The American doctor, not to be outdone, says, "You guys are way behind, we
just took a man with no brain out of Texas, put him in the White House, and
now half the country is looking for work, and the other half preparing for
war."