Colorado Republican Sen. Cory Gardner in an interview Thursday maintained his support for Special Counsel Robert Mueller’s investigation into Russian meddling in the 2016 presidential election, but stopped short of supporting legislation that would protect the probe.

Senate Republicans blocked the bill last week, saying it was unconstitutional. But sponsors, including Sens. Cory Booker, a Democrat, and retiring Republican Jeff Flake, say it’s necessary to prevent President Donald Trump from firing Mueller.

Gardner said such a move would be like Trump “touching the sun.”

Read the rest of the story at Colorado Public Radio.