Colorado constitution
Article II
Section 11

No ex post facto law, nor law impairing the obligation of contracts, or retrospective in its operation, or making any irrevocable grant of special privileges, franchises or immunities, shall be passed by the general assembly.

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Structure Colorado constitution

Colorado constitution

Article II

Section I

Section 2

Section 3

Section 4

Section 5

Section 6

Section 7

Section 8

Section 9

Section 10

Section 11

Section 12

Section 13

Section 14

Section 15

Section 16

Section 16a

Section 17

Section 18

Section 19

Section 20

Section 21

Section 22

Section 23

Section 24

Section 25

Section 26

Section 27

Section 28

Section 29

Section 30

Section 30a

[declared to violate the united states constitution by the united states supreme court in 1996. Not in force.]

[in 2015, the u.S. Supreme court ruled that same-sex marriage is protected under the due process and equal protection clauses of the fourteenth amendment of the u.S. Constitution.]