encourage off-world mining investment by increasing the tax burden on US mining corporations at five percent per year.

By increasing the tax burden at five percent per year for any US Mining corporation that doesn't invest in drone mining technology and relocate its mining activities off world by 2015. Thus the tax burden will be:
15% in 2015
20% in 2016,
25% in 2017,
30% in 2018,
35% in 2019,
40% in 2020,
45% in 2021,
50% in 2022,
55% in 2023,
60% in 2024,
65% in 2025,
70% in 2026,
75% in 2027,
80% in 2028,
85% in 2029,
90% in 2030,
95% in 2031,
100% in 2032 with Nationalization of the companies to be sold off to pay US debt.