By MATTHEW LEE and ERICA WERNER, Associated Press Matthew Lee And Erica Werner, Associated Press 12 mins ago .WASHINGTON – Stepping up pressure on a stalwart but flawed Middle East ally, President Barack Obama said he personally told Egypt's Hosni Mubarak Friday night to take "concrete steps" to expand rights inside the Arab nation and refrain from violence against protesters flooding the streets of Cairo and other cities. The White House suggested U.S. aid could be at stake.