Political scientists have demonstrated the importance of lawmakers’ identities, showing that race, gender, socioeconomic status, and sexual orientation affect legislative and representational behavior. Is the same true for age? We argue it is, but the effect is conditioned by the salience of different “senior issues.” Analyzing the bill introductions by members of Congress during the 109th and 110th Congresses, we show that older lawmakers are more likely to introduce legislation addressing lower salience senior issues than their younger colleagues. In contrast, sizeable senior constituencies in a district influence lawmaker attention to higher salience senior issues, regardless of a lawmaker’s age. These findings have implications for our understanding of senior power and personal roots of representation in the United States.