US Perspective of the War in Ukraine

Washington has pledged support for Ukraine and approved the biggest arms, economic and humanitarian aid package since 1945. It has also provided intelligence and training.  
What is the political and economic thinking behind current policy decisions? Is there bipartisan support? What have been the main policy debates? How long can the US sustain this high-profile support? Can the midterm elections, scheduled for 8 November 2022, alter political aims and foreign policy priorities?  
Since Russia invaded Ukraine on 24 February 2022, US objectives regarding the outcome of the war seem to be shifting, as several US media noted, from liberating Ukraine to defeating Russia. Is the final goal clear for the US citizens and the Western allies?
Does US president Joe Biden have popular support for his policy towards Ukraine? What does the US public think about the war in Ukraine? Is the public ready for long-term support?
What has been the role of the media in shaping policies towards Ukraine?
Bruce Stokes explored public attitudes towards the war in Ukraine, Russia, and government policies, while Richard Parker focused on debates and policy choices that have dominated the US public sphere.