Surfside Condo Wreckage Hints at First Signs of Possible Construction Flaw

The politicians said the collapse was due to climate change:

Engineers who have visited or examined photos of the wreckage of the Champlain Towers South condominium complex have been struck by a possible flaw in its construction: Critical places near the base of the building appeared to use less steel reinforcement than called for in the project’s original design drawings.

Source: Surfside Condo Wreckage Hints at First Signs of Possible Construction Flaw

Typical of large system failures, there are often multiple factors and these will not be known for some time.