Lyle Denniston looks at a constitutional conflict involving President Barack Obama and a new law that would block an Iranian delegate to the United Nations from entering the United States.
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Lyle Denniston examines how a move by the acting head of Social Security that ended a tax return withholding practice has constitutional implications.
Lyle Denniston looks at recent statements from retired Justice John Paul Stevens about limiting gun rights, and a political reality that runs counter to that idea.
Lyle Denniston looks at the contentious issue of whether individuals charged with war crimes based on terrorist acts should be tried in a civilian court or by a military commission.
Lyle Denniston looks at how a remark about Israel by New Jersey Governor Chris Christie touched a nerve that also touches on a constitutional issue about the recognition of foreign governments.