Hi Saathi,

Most (99%) of immigration officer ask for IELTS crap. My friend was only awarded 8 despite of being PHD student in Cornell University. In his case that was enough to make 67 points. I had BSEE and 2 year work experience from the states.  I completed my MS from Canada. In addition, I had 2 year of TA + RA experience. Despite of all of these, I was asked to take IELTS.

 If you need 16 to make 67, I personally suggest you to take it. You should not have any problem getting 7 in each section. If they ask just take IELTS. Do not waste time to convince on you English proficiency.

Hopefully this will help.