From Investopedia ... Regarding MJDS ...
These allowances make it significantly easier for Canadian firms to raise funding in the U.S. through securities offerings, by reducing the cost, time and administrative burdens associated with issuing and reporting under two separate disclosure regimes. Canadian companies can raise such funding either in conjunction with issuing securities in Canada, or do it solely in the U.S. There is a reciprocal agreement that allows U.S. firms to raise funding through securities offerings in Canada, though it is used less frequently.
There are a number of requirements for Canadian firms to be eligible to use MJDS, including provisions that ensure such firms are already publicly listed and that the public float is of a certain size. MJDS is thus not available for some Canadian companies, including smaller firms and new firms seeking to raise funds through initial public offerings. (Such companies can still raise funding in the U.S., but they may not do so using the streamlined advantages provided under MJDS.) All securities are eligible for companies to raise funds with under MJDS.