The director of a news or journalistic program transmitted by radio must be a Colombian national. 
"Article 7 The transmission of news or journalistic programs by radio broadcasting services requires a special license granted by the Ministry of Communications, issued in favor of its Director, which will be granted, subject to compliance with the following requirements: [...]
e) Proof that the Director of the program is a national, Colombian, a practicing citizen, and that he presents the respective police certificate;[...]" (Law no. 74 regulating the Transmission of Programs by Broadcasting Services (15 December 1966), last amended by Law no. 1341 of 2009, Article 7 [google translation])
Law no. 74 regulating the Transmission of Programs by Broadcasting Services (15 December 1966), last amended by Law no. 1341 of 2009, Article 7
[<a href="https://www.suin-juriscol.gov.co/viewDocument.asp?id=1789949">Law</a>]