Carbon sequestration research funds would be far better spent on public transportation. We’d emit far less CO2 that way.
Grok gets into aspects of the science here, but huge expenditures by various agencies would fund a lot of trains. (And carbon sequestration will be hugely expensive in and of itself, as Climate Progress gets into here).
For example DOE announced a while back $575 million for research projects on carbon sequestration and storage. Talk about government largesse. This is pork barrel spending by another name. It creates jobs, but think about all the jobs we’d have building and running huge, effective rail networks.