In the Chevron case, the Supreme Court considered a challenge to an EPA rule that established "bubbles" over industrial plants as a part of measuring pollution. The Court held that the EPA's rule was .

The Court held that the EPA's rule was valid as courts generally defer to the expertise of an agency.

the federal government of the united states was established by the constitution. us is a presidential republic. the president is head of state, head of government and of a two party legislative and electoral system. the supreme court balances the powers of the federal and the state government. yhe executive branch is headed by the oresident. there are two chambers of congress, the senate and the house of representatives. judicial power is exercised by the judicial branch (or judiciary), comprised of the supreme court and lower federal courts. the judiciary's function is to interpret the   constitution as well as the federal laws and regulations.

they protect against unsafe foods and medicines being sold

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