its not like that if you are applying with family so it can indicate weak ties to home country regarding US visa it is a big difference and most of US visas issued without taking any single paper however Canada requirements are different your ties means property business all should be stable and you have other countries travelling too etc..brother live on xxx place or invitation won't help if your own documents aren't accurate as per their requirementsMy mostly tours are bussines .and they travelled with me to saudia dubai saudan and turkey.
But i never applied with fiamly for TRV.in this US trip also applied alone and going alone.us lives my sister.my interview took only 2 min in USA embassy they saw my profile and didnot even asked me any paper and approved my visa .Canadian donot think my ties strong even i did nit applied with faimly.if i apply with faimly there will be fore confedent i will not back..i donot know how to prove my bussines my tax my emploeys all have record.very big companies in pakistan even donit register there mostly emploeys .and i have done for my emploeys.