Anchored by Jake Tapper, The Lead airs at 4 p.m. ET on CNN.
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(CNN) - An independent assessment of National Security Agency surveillance ordered by President Barack Obama recommends a controversial program aimed at collecting Americans' electronic communications remain in place.
But the effort predominantly covering so-called metadata relating to phone records and e-mail must have tighter constraints and greater transparency, according to the report released on Wednesday by the presidential Review Group on Intelligence.