What characterized Congress's political alignment during Lyndon B. Johnson's second administration?

During Lyndon B. Johnson's second administration, the Democratic Party indeed held a two-thirds majority in Congress. This powerful position allowed Johnson to pursue his ambitious Great Society programs, which aimed to expand social welfare and civil rights. With a substantial majority, Democrats were able to pass significant legislation, including the Civil Rights Act and Medicare, which transformed the social and political landscape of the United States during the 1960s.

A two-thirds majority enabled the Democratic leadership to overcome potential filibusters in the Senate and facilitated the passage of landmark bills without requiring substantial bipartisan support. This level of control was crucial for advancing Johnson's domestic agenda during a time of social upheaval and civil rights movements.