US to Call for Increased Security at Foreign Airports, Officials Say

The Department of Homeland Security is expected to call as soon as tomorrow for heightened security measures at strategic foreign airports that have direct flights to the U.S., aviation and government officials told ABC News, in the wake of the Russian airline tragedy.

In addition to the requests to be made of last point of departure (LPD) airports, other security measures being discussed include more diligent baggage screening at major domestic U.S. airports -- to also potentially include matching of luggage to manifest lists before takeoff.

Today President Obama appeared to make reference to airport security when he said that he thought there was a "possibility" that a bomb may have brought down the Russian airliner this weekend in Egypt, killing more than 200 people.

"We know that the procedures we have here in the United States are different than some of the procedures that exist for inbound and outbound flights there," Obama told CBS News affiliate KIRO Radio.