The thing is, you can maybe take it to court, but the suspension itself while a court examines it might be disruptive.

It looks like there are a number of federal loans preferentially extended to a number of groups (black-owned businesses, female-owned businesses, etc) by the Small Business Administration. If Trump intended to end minority-preferential lending, say, I could see that going over well with people who voted for him, but across-the-board temporary suspension while it’s evaluated seems to me like it’d make a lot of people out there who voted for him unhappy.