All eyes on U.S. Supreme Court as rulings on health care, immigration expected this week – Mark Preston explains

As early as 10am today, the U.S. Supreme Court could hand down their ruling on the constitutionality of health care reform, President Obama's signature piece of legislation. The core question for the court: Can the government force individuals to purchase health insurance? Both sides have multiple responses prepped depending on how the court rules.

This week, the court is also expected to issue a ruling on Arizona's controversial immigration law.

This morning on "Early Start," CNN political director Mark Preston explains how possible rulings on each issue could shape the presidential election.