We also need to be prepared to tax foreign entities and punish those who fail to pay in time with appropriate consequences (I.e. revocation of operation business licences within Canada, force inspection at border crossing of goods, geo lock web services and impose fines on those who don’t host large services within Canadian borders Heck demand that social media sites keep all data within Canadian boaders at all time)

We could also impose restrictions on exports ( only so many barrels of oil or Kiliowats of power per month can be exported ) add export licenses to everything under the Canada controlled goods program (hell everything could be a weapon in the wrong hands even car parts it’s dual use right) impose crazy rules about working in fields like aerospace or IT demand that all exported knowledge requires relicensing from canada like the us does with Thier EAR stuff make it hard to be employed as a us citizen in Canada.

Refuse to report banking status to us services for a while or remove any automation around it.

Walk away from copyright and patent agreements or make enforcement contingent on a companies or officer of the companies current taxable standing ( can only collect damages up to some fraction of a companies or officer or the boards taxable income in Canada)

Drop subsides for US car makers let European makers fill the voids if they can’t let Chinese brands move in.

shut down nexus impose visas at the border even if it’s for a couple days or weeks in the summer as a sign of what could happen. Close airspace to us originating flights on a whim one day randomly. Put a toll on the road from Alaska to the southern states heck put them on all borders. Hell just don’t maintain those routes and let time take its toll and let them become impossible. Or just put cops on those routes with insane ticket quotas for those routes and hit them hard for going 1km/hr over the limit. If they don’t pay on the spot hold them over night and arrange court dates as they are flight risks

All I’m saying is, if the status quo is to be interrupted it goes both ways