The process of uranium enrichment increases the concentration of U-235, an isotope that can sustain a nuclear chain reaction.

On Monday, former president Bill Clinton belatedly announced plans to tighten the ethical safeguards for the Clinton Foundation, the family charity, to eliminate “legitimate concerns about ...

The Clinton Foundation is under intensifying scrutiny as Republicans accuse it of being a corrupt and opaque institution.

“Hillary Clinton … took in hundreds of millions of dollars for a hospital in Haiti that went to the Clinton Foundation, that was never built — that was years ago. Where is that money?” ...

The Clinton Foundation is in talks to provide Charity Navigator with needed financial information. It was last rated in 2014.

Hillary Clinton's ties to the foundation that bears her family's name would put the would-be president in an uncharted ethical area every bit as complicated as Donald Trump's business interests ...

A charity affiliated with the Clinton Foundation failed to reveal the identities of its 1,100 donors, creating a broad exception to the foundation’s promise to disclose funding sources as part ...

The Clinton Foundation has become the subject of national controversy, but not because Republican presidential nominee Donald Trump did not always admire its charity work. The Clinton Foundation ...

The Clinton Foundation has been accused of a lot of things, but the biggest problem it faces is simply it’s in unknown territory.

Former Clinton Foundation official Doug Band would contact Huma Abedin, Hillary’s closest aide, when he needed a “favor” for a “friend” (his words) — and the friend would in many cases ...

The Clinton Foundation is under intensifying scrutiny as Republicans accuse it of being a corrupt and opaque institution.