Bush is ready to hire a lawyer in case he has to testify in the Valerie Plame case. This is quite right; you should be ready to hire a lawyer if you suspect you may be the target of a grand jury investigation. Clinton hired a lawyer, Charles Ruff, during the Whitewater investigation.
Mind you, that came after Ken Starr began his investigation. But if there’s a chance you’re being investigated, it makes sense to be prepared.