The constitution is the guiding force behind the US. The president, federal officers and all members of the military swear to defend it.
Though written at the end of the 18th century, many of the lessons from the debate over its adoption are of interest to us in modern-day Israel: namely the maintenance of equality between the three branches of government, the preservation of checks and balances, the need to maintain a strong judiciary but also the need to retain a path to override Supreme Court decisions, the importance of harnessing the talents of high-level visionaries and the need to maintain a broad consensus before initiating reform.