March 4 (Bloomberg) -- President Barack Obama sent Congress a $3.9 trillion budget request with increased spending for employment, education and job-training programs to boost the economy, financed partly by trimming tax breaks for upper-income families and some businesses.

The sixth budget of Obama’s presidency, released eight months before the November midterm election, would enhance tax- credit programs for some families and childless workers and pump about $302 billion over four years into infrastructure projects such as roads and bridges. It would allocate $25 billion less for weapons and research than projected a year ago.

“The budget is not just about numbers, it’s about our values,” Obama said at a Washington elementary school today. “It’s a roadmap for creating jobs” in part through education, while it “adheres to the spending levels” agreed to by Congress.