WASHINGTON It sounds like a silver lining. Even if the Supreme Court overturns President Barack Obama's health care law, employers can keep offering popular coverage for the young adult children of their workers.

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A rising number of American men who underwent vasectomies a procedure once considered permanent are choosing microsurgeries to re-hook or reroute their reproductive tubes, according to two leading urologists.

But here's the catch: The parents' taxes would go up.

That's only one of the messy potential ripple effects when the Supreme Court delivers its verdict on the Affordable Care Act this month. The law affects most major components of the U.S. health care system in its effort to extend coverage to millions of uninsured people.

Because the legislation is so complicated, an orderly unwinding would prove difficult if it were overturned entirely or in part.

Better Medicare prescription benefits, currently saving hundreds of dollars for older people with high drug costs, would be suspended. Ditto for preventive care with no co-payments, now available to retirees and working families alike.

Partially overturning the law could leave hospitals, insurers and other service providers on the hook for tax increases and spending cuts without the law's promise of more paying customers to offset losses.

If the law is upheld, other kinds of complications could result.

The nation is so divided that states led by Republicans are largely unprepared to carry out critical requirements such as creating insurance markets. Things may not settle down.

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Undoing health law a mess?