President Obama on Saturday struck back aggressively at critics of his $3.6 trillion budget proposal, casting himself as a populist crusader whose "sweeping change" has angered Washington's entrenched special interests, and promised to fight them. "I realize that passing this budget won't be easy. Because it represents real and dramatic change, it also represents a threat to the status quo in Washington," Mr. Obama said in his weekly video and radio address. Mr. Obama's language was combative and confrontational, as he promised to fight for "American families." "I know these steps won't sit well with the special interests and lobbyists...
