Judge asks Justice Department lawyer to explain in writing the Obama administration's position on the role of federal courts
The Republican frontrunner gains more momentum with Tuesday wins in Wisconsin, Maryland, and the District of Columbia
President Obama says the high court is 'activist' if it doesn't uphold his healthcare law
Ahead of Tuesday's primaries, more GOP lawmakers have joined the Romney camp
Will key endorsements and Tea Party acceptance of Mitt Romney bring the GOP race to a close?
