Final answer:
The second step in the 3-step plan is to participate in civic life and actively engage in activities that contribute to the betterment of society and the democratic process.
Step-by-step explanation:
The second step of the 3-step plan to become Americans who work together to uphold American ideals is to participate in civic life. This involves actively engaging in activities that contribute to the betterment of society and the democratic process. Examples of participating in civic life include voting in elections, volunteering in community organizations, attending public meetings, and advocating for causes or policies that align with American values and ideals.