Instead he argued that the law pre-empts the federal government's power to set immigration policy.

ECONOMIST: Immigration politics

"If she announces fairly soon after that, she essentially pre-empts the field, " he said.

WSJ: Clinton Exits State Post in Strong Position

The potential explosiveness of Har Homa is that it pre-empts that decision, even before the talks begin.

ECONOMIST: Step back from Har Homa

The Supreme Court has ordered that the federal government pre-empts states when it comes to immigration law.

CNN: Indiana gets real on immigration

And it pre-empts some state laws regarding liability for mortgage securitization.

FORBES: Congress Lags The Markets On Mortgage Mess

Utilising straw for biomass represents one of the most efficient methods for its disposal and pre-empts the need for it to be ploughed back into the land.

BBC: Time to encourage biomass growth

The regulation pre-empts the signing of a global charter on the question of jurisdiction in cross-border online disputes, under discussion at a forum called the Hague Convention.

CNN: European justices pass stiff e-commerce law

As early as next week, the court could rule whether a federal labor law pre-empts California's prohibition against employers using state money to deter union organizing campaigns.

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Abbas says he won't return to negotiations without an Israeli construction freeze, arguing that Israel's building on war-won land pre-empts the outcome of talks on a border between Israel and a future state of Palestine.

NPR: Palestinians Cool To Partial Settlement Freeze

We need an equitable system that protects the health of people who are fortunate enough to enjoy good health, empowers and motivates those whose lifestyles, environment or socioeconomic circumstances create heath vulnerabilities so they can reduce their risks, and predicts and pre-empts those with the earliest warnings of disease.

FORBES: Magazine Article