Conversation so far:
When was Dan Roonney ambassador to Ireland?
On March 17, 2009, President Obama announced he had nominated Dan Rooney to become the next U.S. ambassador to Ireland, citing the owner's longstanding support for Irish-American charitable causes.
Did Dan Rooney accomplish anything in that role?
Yes, in 2008, Dan Rooney gave $30,000 to a Democratic Party committee that aided Obama's campaign, according to CQ MoneyLine, a non-partisan group that tracks political contributions.
How was Dan Rooney involved in Politics?
In an April 2011 interview with The Irish Times, Dan Rooney mentioned that he would consider resigning his ambassadorship in order to campaign for Obama's re-election.

Question: What happened after that ?
Self-contained rewrite: What happened after Dan Rooney's time as ambassador?