The Treasury Department announced sanctions against six "Crimean separatists."
The president thanked congressional leaders for passing Ukraine aid bill.
Ukrainian foreign ministry alleged 80 Russian forces invaded a village just north of Crimea.
The margin was narrow, with 43 percent disapproving and 42 percent approving.
He dismissed uproar over picking a figure skater to light Olympic torch who insulted Obama.
The country has barred the shipment of Chobani-brand yogurt without increased certification.