One from Bangladesh, another from India and the third, from China
They go with a White House office to examine the fence.
The Bangladesh contractor takes out a tape measure and does some measuring, then works some figures with a pencil.
"Well", he says, "I figure the job will run about $900. ($400 for materials, $400 for my team and $100 profit for me)"
The Chinese contractor also does some measuring and figuring, then says, "I can do this job for $700. ($300 for materials, $300 for my team and $100 profit for me)"