President Barack Obama, citing his own struggle to give up smoking, signed into law a bill giving the U.S. government broad regulatory power for the first time over cigarettes and other tobacco products. Mr. Obama said Monday that the law "would curb the ability of tobacco companies to market their products to the young. The law allows the U.S. Food and Drug Administration to put strict limits on the manufacturing and marketing of tobacco products but stops short of allowing it to ban cigarettes or their addictive ingredient, nicotine. Mr. Obama's spokesman, Robert Gibbs, said the president's smoking habit was "something that he continues to struggle with." Mr. Gibbs declined to answer directly whether the president still smoked.