2. Erie statutes 28 U.S.C. § 1652. State laws as rules of decision
The laws of the several states, except where the Constitution or treaties of the United States or Acts of Congress otherwise require or provide, shall be regarded as rules of decision in civil actions in the courts of the United States, in cases where they apply.
28 U.S.C. § Rules of procedure and evidence; power to prescribe
(a) The Supreme Court shall have the power to prescribe general rules of practice and procedure and rules of evidence for cases in the United States district courts (including proceedings before magistrate judges thereof) and courts of appeals.
(b) Such rules shall not abridge, enlarge or modify any substantive right. All laws in conflict with such rules shall be of no further force or effect after such rules have taken effect.
(c) Such rules may define when a ruling of a district court is final for the purposes of appeal under section 1291 of this title.

3. Layer 1 Power_to_decide IF Personal_jurisdiction_over_defendant AND
Notice AND
Venue AND
Subject_matter_jurisdiction

4. Layer_2 Personal_jurisdiction IF Notice IF
Consent OR
(state_assertion AND constitutional_assertion)
Notice IF
Compliance_with_forum_service_rules AND
Constitutional_notice
Venue if satisfy forum venue statute

5. Layer 2 continued Subject_matter_jurisdiction IF
Sovereign gives it through
Constitution OR
statute

6. Layer 3
Consent IF
File suit OR
Explicitly consent OR
Generally appear

7. Layer 3 continued Federal subject_matter_jurisdiction IF
Federal question (§ 1331) OR
Diversity AND jurisdictional amount (§ 1332) OR
Supplemental (§ 1367) OR
Removal (§ 1441)

8. Layer 3 continued State_assertion IF Constitutional_assertion IF
(statute OR court_rule OR common_law_rule) AND
Facts satisfy it
Constitutional_assertion IF
Consent OR
Traditional OR (Scalia in Burnham) OR
(Minimum_contacts AND fair_play_and_substantial_justice

9. Layer 3 continued Constitutional_notice IF
Reasonably calculated to give actual notice under the relevant circumstances

10. Layer 4 Traditional IF Minimum_contacts IF
Pure_in_rem OR
Personal_service_on_one_physically_present
Minimum_contacts IF
(Specific AND purposeful AND relate) OR
(General AND systematic_and_continuous)

11. Layer 4 continued Fair_play_and_substantial_justice IF Balance of
Burden on dft
Forum state interested in dispute
Ptf’s ability to get practical relief
Efficient to parties and judicial system
Shared state interests