Prominent US climate scientists have told the Guardian that the Trump administration is holding up research funding as their projects undergo an unprecedented political review by the high-school football teammate of the US interior secretary.

The US interior department administers over $5.5bn in funding to external organizations, mostly for research, conservation and land acquisition. At the beginning of 2018, interior secretary Ryan Zinke instated a new requirement that scientific funding above $50,000 must undergo an additional review to ensure expenditures “better align with the administration’s priorities”.

Zinke has signaled that climate change is not one of those priorities: this…