Sovereignty is divided in federalism between the federal and state
In the UK, we have a unitary state and comparing federalism to devolution
Federalism -> shared sovereignty
In the UK Parliament remains Sovereign so sovereignty is not shared to devolved bodies
Some powers given to the state, and all the states have the same powers whilst in the UK devolution is assymetrical
Some powers are reserved for the federal/national gov based in Washington
State powers
Education, healthcare, penal system, elections, state income tax, driving license, drinking age
Federal gov powers
Foreign policy, federal income tax (6th Amendment), border control (immigration), ‘coin money’ (national currency), regulation of interstate commerce
Concurrent powers
Make amendments, levy taxes, establish courts
If a federal government starts to dabble in health policy e.g. Obamacare, it seems like the US is becoming less federal
Federal government can only exercise powers explicitly given whilst the states can exercise power over anything listed plus anything not included in the constitution