National Defence Authorisation Act is one of the two bills used by the US Congress to oversee the defence budget of the USA (the other bill is Defence Appropriation Bill). It specifies the annual budget and expenditure of the country’s defence department. This is a yearly bill. This bill has been passed by the Congress for 60 years in a row. This year’s bill includes mandatory sanctions on Turkey for its acquisition of Russian missile defence system, renaming of bases that currently honor Confederate leaders from pro-slavery states, pay raises for service members, etc.