Hillary Clinton extended warm welcomes to executives from companies that had donated to the Clinton Foundation, new emails from her first year as secretary show.

Her frequent interactions with firms that had given generously to her family philanthropy — many of which were lobbying the State Department at the same time — raise questions about whether she used her diplomatic perch to help certain companies get ahead.

For example, in September of 2009, Clinton asked aides to help the Blackstone Group secure a requested visa.

Blackstone donated between $250,000 and $500,000 to the Clinton Foundation, donor records show.

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