My 01 maxima keeps pulling to the right. It happens at slow and fast speeds. I recently had both my control arms done and an alignment.

 

It could be torque steer, which is only extremely obvious when you accelerate hard. It's usually just a light pull to the right.

 

If it's only pulling one direction, it sounds like an alignment issue to me.

If it happens at a consistent speed, I'd say it's the alignment wasn't done correctly. Say 40-60 MPH cruise control type speed.

If this only started happening after they did the control arms, it is more than likely their causing.

Here's things you could check though:
-Tire Pressure
-Mismatching tires
-A sticking brake caliper

 

+1 , check tire pressure and make sure all tires are the same, rotate them, see if problem still occurs

 

First match air pressure and then rotate the tires.
There's a good chance it's just the tires.