The biggest feat of Donald Trump’s first two years as US president was a huge tax cut. The remaining two will probably start off with an almighty battle over whether his personal tax returns will be made public.
The difference between a unified US federal government and a divided one is always immense.
This time, the contrast will be like night and day. Mr Trump repeatedly pilloried Democrats as a party of crime on the campaign trail for the midterm elections. On Tuesday night they gained control of the House of Representatives, which means they now have the majority’s power to investigate criminal allegations against his administration. They will make full use of it. The next few months will be a golden age of congressional subpoenas.