As "Dreamers", young immigrants protected by presidential action, his Latino outreach directors keenly feel the limits that bound their ambitions.
To some, the limits that are emerging are so constraining that they make a mockery of the process.
His exile, however, if it comes to that, will be a reminder of the limits that remain.
What comes next happens, more or less, within the confines of the limits that were created in their early years.
"When one person is pushing the limits, that creates a pathway for others to follow and keep pushing," said Torah Bright, the Australian halfpipe rider.
Considerable drama also stems from those same characters' frustration when they realize the limits that will be imposed on their rebellion.
But in the meantime, Pistorius became the focus of an intense ethical debate about the limits that should be placed on technology.
Mr. Gensler said the limits that have been set in the past have never been aimed at reducing speculative excesses, and financial traders often receive exemptions.
Junichiro Koizumi, Japan's prime minister, views America's plea to send troops to Iraq as a chance to stretch the limits that have long constrained Japan's defence policy.
"Competitors are watching to see how much Facebook can get away with and what are the limits that are considered acceptable by government and users".
The IRS is allowing retirement plans to ignore the limits that normally apply to hardship distributions, thus allowing them to be used for food and shelter.
