This week the separate and heated debates on immigration, jobs and infrastructure crystalized around the question of whether, in some ways, all three can work together. The immigrant investor program known as EB-5 – not a household name outside of real estate development circles — is due to expire at week’s end. Congress is racing now to pull off an upgrade to the program in its final hours. Success will be a sign that lawmakers can find their way on these bigger issues despite the rhetoric of the last few months.