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Overview: The federal government has spent at least $1.7 million to air three different TV ads featuring President Donald Trump in recent days, according to an estimate from AdImpact, which tracks and analyzes political ad spending across television, digital and connected TV channels.

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Origin Genomics aims to prove that the potential benefits of its technology for editing disease-causing genes in human embryos outweigh the risks.

South Africa reels from spate of mass shootings that killed 38 people in a week

Potential Taiwan tension sparked 'last minute' change in Trump-Xi National Archives visit

Christopher Swartz, former acting chief of ethics law at the U.S.

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A federal judge on Tuesday ordered the Bureau of Prisons to reinstate a collective bargaining agreement with the agency's union after the bureau's director abruptly terminated it last year.

WATCH: Future Hall of Famer Justin Verlander talks emotional moment on the mound

WATCH: Future Hall of Famer Justin Verlander talks emotional moment on the mound

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WATCH: Future Hall of Famer Justin Verlander talks emotional moment on the mound

WATCH: Justin Verlander’s emotional final start

The British base is used by the U.S.

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