evidence: Republican presidential candidate Nikki Haley is calling for changing the retirement age for Americans currently in their 20s and limiting Social Security and Medicare benefits for wealthier Americans, staking out a position on the politically controversial issue of entitlement reform that’s already been the subject of attacks from former President Donald Trump. [...] When pressed for what specific new retirement age she supports, the former South Carolina governor said, "It’s the new ones coming in. It’s those in their 20s that are coming in. You’re coming to them and you’re saying, the game has changed. We’re going to do this completely differently." Haley had first proposed altering the retirement age for "young people" at a town hall in Iowa Wednesday, outlining several changes to entitlement programs. Haley’s campaign, however, did not respond when CNN asked what she would set as the retirement age.