Final answer:
The purpose of Baron's proposal is to use satire to criticize the language impasse in Congress and draw attention to the need for a resolution.
Step-by-step explanation:
The purpose of Dennis Baron's proposal, which alludes to Jonathan Swift's "A Modest Proposal," is to use satire to criticize the language impasse in Congress.
By proposing to ban English instead of making it official, Baron is highlighting the absurdity of the situation and drawing attention to the need for a resolution.
Satire allows Baron to expose the faults of the current language debate and provoke thought and discussion on the topic.