Uribe signs electoral reform bill
Colombia's President Alvaro Uribe has signed legislation calling for a national referendum on amending the constitution to allow him to seek re-election for a second time.
The proposal now goes to the Constitutional Court for review.
The court has 90 days to rule whether legislators met all requirements for proposing a constitutional amendment.
The constitution already has been amended once to permit him to serve a second consecutive four-year term.
The proposed referendum would let Colombians decide if a president should be allowed to hold the office for three consecutive terms.
If the court approves the measure, at least 25% of voters, about 7.2 million, would have to cast ballots for the referendum to be valid.