The existing loophole-ridden land rules, dating from 2001, give developers wide leeway to clear property.
Mr. Obama would be open to a preference for dividend income as part of an overhaul of the tax code, the official said, "but absent that broader reform, he thinks we cannot afford to have a lower rate on top of all of the existing loopholes and tax benefits".
Reaction has been split about the impact of closing the existing loopholes for background checks, with the National Rifle Association insisting it would make little difference but gun control campaigners declaring it a landmark step in keeping weapons out of the wrong hands.
The revisions would allow universities to engage in a quality control procedure through which they can identify the flaws, if any, of their policies and act to plug the existing loopholes in the framework.
Given the number of existing loopholes and the ease with which people can buy firearms on the Internet, people printing guns might seem like adding a drop of water to an Olympic-size swimming pool.
They want Congress to eliminate taxes on the factories they ship overseas, even though an existing loophole already allows them to lower their tax bill when they outsource jobs.
It's pushing for tax cuts for its members: a lower rate, the continuation of existing loopholes and the creation of new ones, like a permanent credit for research and a tax holiday for overseas profits.
* Close an existing loophole in order to require gun purchasers to undergo background checks at gun shows.
Employing the strongest language he has ever been heard to use, President Roosevelt declared at the press conference that he would urge Congress during the present session to take action to plug up existing loopholes and end the "immoral and unethical" avoidance of Federal income tax payment.
Such a policy should close existing loopholes, including the so-called gun show loophole, which enables private sales of firearms without background checks.
"Countries shouldn't be looking at ways to legitimise existing loopholes in the IWC moratorium, but at closing them altogether," Willie MacKenzie, oceans campaigner at Greenpeace UK, said.
