Republicans have been building their case against the "failed presidency" of Barack Obama for nearly four years and this week's convention is prime time for making the charges stick.

The Supreme Court upheld the constitutionality of President Barack Obama's health care law, including the most disputed part: the mandate that virtually all Americans have health insurance or pay a fine. The mandate was upheld under the federal government's power to levy taxes.

The Supreme Court's upcoming ruling on President Barack Obama's health care overhaul law follows a century of debate over what role the government should play in helping people in the United States afford medical care.