The difference is that Cindy's sister says she is hurt by the fact that Cindy describes herself as an only child.
Do you have anything that says Obama ever denied that this guy was his half brother?

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“ The subjects of every state ought to contribute towards the support of the government, as nearly as possible, in proportion to their respective abilities; that is, in proportion to the revenue which they respectively enjoy under the protection of the state.”

Adam Smith , The Wealth of Nations 1776

"We have always known that heedless self-interest was bad morals; we know now that it is bad economics"
FDR's second Inaugural Address