They’ve allowed concealed-carry weapons in national parks, considered easing gun restrictions in the District of Columbia, and turned back a campaign pledge on gun-record transparency.
She hasn't ruled on hot-button issues, which puts her in a middle position - for now, anyway.
A crop of legal cases across the US raise concerns over the use of electric stun guns in routine police stops.
Readers write about Obama's nominee for the Supreme Court.
Obama's high-court pick is no 'stealth candidate.' She has made some 450 judicial decisions. What's more, she has not been shy about expressing her opinions publicly.
Voters approved Proposition 8 last year, which made gay marriages illegal. The court decides Tuesday if the measure was unconstitutional.