The statement is strongly supported by a consensus across multiple, highly authoritative primary sources. The core claims of the statement—the actors involved (ruling and opposition parties), the action (proposing a raise), and the specific amount (1.78 million yen)—are consistently corroborated.Key evidence points:1. **Actor Confirmation:** Multiple top-tier Japanese news outlets, including Nikkei, The Asahi Shimbun, and Jiji Press, explicitly state that an agreement was reached between the ruling Liberal Democratic Party (LDP) and at least one key opposition party, the Democratic Party for the People (DPP). One Jiji Press article also notes the involvement of the Japan Innovation Party, further justifying the plural 'opposition parties'.2. **Amount Confirmation:** All sources that mention a figure are unanimous in reporting the proposed new income cap as 1.78 million yen. There is no conflicting information regarding this amount.3. **Action Confirmation:** The sources frequently use terms like "agreed" or "decided," which are stronger than "proposed." An agreement between political parties on a specific policy change logically entails that a proposal was made and accepted. Therefore, the evidence fully supports the claim that a proposal was put forth.There are no contradictions in the provided evidence. Even sources with lower authority, such as a blog post and a YouTube news report, align perfectly with the information presented by the major national newspapers. The consistency and high authority of the supporting sources lead to a high confidence level in the statement's truthfulness.