Google-chrome – How to make the “new tab” page load as ‘Google’ rather than ‘Google Canada’ in Chrome

When I open a new tab, I get a new tab page that is running as Google.ca rather than Google.com.

Also, when I do a search at any time in the omnibox, I get results coming from Google.ca.

My homepage is set as Google.com.

Is it possible to have the new tab page give me the regular Google Search interface so that I can use the "OK Google" feature without having to click on my home button or the mic button?
If it's possible to adjust this, will it also adjust my search results from the omnibox?

Thank you