Bill Clinton

CHARLOTTE — Former president Bill Clinton delivered a spirited defense of President Obama’s handling of the nation’s struggling economy here Wednesday night, criticizing the agenda and philosophy of Mitt Romney and accusing the Republican Party of ideological rigidity and an unwillingness to compromise.

In a speech formally nominating Obama for a second term, Clinton argued that the president has spent the past four years putting in place policies that will lead to a more vibrant and balanced economy and asserted that, despite problems, Americans are “clearly better off” than they were when the president was sworn into office