Well, his declarations are on the White House website. He has issued a direction from the very top, which one would hope could be done in Canada, as well, that “The Government should not keep information confidential merely because public officials might be embarrassed by disclosure because errors and failures might be revealed or because of speculative or abstract fears.”
What he did was reverse the presumption by his predecessor that if in doubt, information should be withheld. He reversed that to say, if in doubt, information should be disclosed. That is a clear reversal of policy, and that is a major step.