President Barack Obama’s budget will propose an ambitious six-year, $478 billion public works program of highway, bridge and transit upgrades, half of it financed with a one-time mandatory tax on profits that U.S. companies have amassed overseas, White House officials said. The proposal, one of the main components of the $4 trillion spending plan for the 2016 budget year that Obama will send to Congress on Monday, attempts to tap into bipartisan support for spending on badly needed infrastructure repairs and construction. The tax on accumulated foreign profits would be set at 14 percent and due immediately. Under current law,...