Opening the Venezuela/Colombia border

A ton of Venezuelans want to cross the Darian Gap and go north into the USA (we could posit that if they were closer they would all already be there). Groups go regularly across the dangerous passage. It takes 2 weeks to arrive in the States. ... Between them and the Darian Jungle is Colombia, which has been a great friend politically to America for years. Colombia elected Petro, a ‘socialist’ president (their first Leftist president) who took office in August. He opened the border with Venezuela a few days ago.

For previous years, Venezuealans already crossed easily into Colombia, and millions are new immigrants who crossed not though the border. How much difference does legal crossing make?

Venezuelans prisons are overfull. Prisoners crossing is being discussed on Colombian analysis news. (Interesting to remember how Britain exported its prisoners to places like Australia over 100 years ago. To contrast, everyone talks about how currently America makes a profit for selected groups though the monetization of incarceration.) However, how many of these Venezuealans are in for polical crimes (black market petrol sales) or economic crimes (people who would not sell so many illegal products if there was a healthy economy to work in)? Or for drug crimes (drugs which are increasily being made legal in many countries)?

Yesterday in Colombian cities there were large marches in protest of the new president. Signs carried were about taxes, breaking Antioquia into three pieces, and the Darian Gap, among other themes. Most of the marchers were older, unlike many protest marches.

Side note. Colombians say Venezuealans are tall. How true is this?