Mitt:

Governor Mitt Romney's private foundation -- which often sends money to religious organizations, schools, and social services groups -- gave $50,000 in 2005 to two prominent conservative think tanks that have provided him with a platform as he readies for a potential run for president, public records indicate.

...

Analysts with the Heritage Foundation worked closely with Romney in the past year to develop his healthcare initiative, which would require all Bay State residents to obtain medical insurance, a collaboration he often cites during his travels. Romney spoke at Heritage Foundation events at least three times since 2004.

The donations were not, apparently, illegal.