Is it bad if a cable is higher current rating than a charger? First time asking here, but 

Is there any potential harm in using a charging cable with a higher current rating than a charger it is connected to? It's a tablet (Asus P027) and its charger is 5V/2A only. 

I bought a 1-meter/3.3-foot USB-A to USB-C (3.1) cable rated for 3A, it has a 56K resistor according to the QA on the product's page (Belkin 1m USB-A to C cable should pull it on google) and this is all I know about it.
No, only the device should not draw more current than the adapter and the cable can handle.

So the device defines how much current will flow through the circuit (which consists of your adapter and cable).

If the device draws more current, the adapter or the cable may overheat (with a fire hazard).

Btw, it's better to be safe and not use exactly a 2A but at least more, so you are safe with a cable of 3A.

Remarks from others
Also, this yields for most (cheap) adapters. See the comment of Jarrod Christman for an exception.

For USB, there is a negotiation protocol. See the comment of Yakk below.