The "Make Billionaires Pay Their Fair Share Act" aims to address wealth inequality by introducing a new tax on individuals and trusts with assets exceeding one billion dollars. This wealth tax is set at 5 percent on the net value of assets, calculated by subtracting debts from total asset value. The legislation establishes specific rules for asset valuation, reporting requirements, and provisions for children's assets and deceased individuals. This marks a significant shift in the U.S.