WASHINGTON — President Obama, seeking to put the prosperity and promise of the middle class at the heart of his second-term agenda, called on Congress on Tuesday night to raise the federal minimum wage to $9 an hour, saying that would lift millions out of poverty and energize the economy.

In an assertive State of the Union address that fleshed out the populist themes of his inauguration speech, Mr. Obama declared it was “our generation’s task” to “reignite the true engine of America’s economic growth — a rising, thriving middle class.”  Read more