There is always a tension within the LCMS about closed communion. "Officially" it is the policy of the LCMS that all congregations practice closed communion, that is, communion for members in good standing in a Missouri Synod Lutheran church.
But, despite the official position, many congregations do not practice closed communion. The rationale of pastors is that, in the practical, "real world," a little thing called "pastoral discretion" must be used. Now, I agree, there may be times when it is good for a non-LCMS Christian to partake of the Holy Meal, but those times should be few and far between.
Pastors who take liberties with pastoral discretion often appeal to the Gospel. They do not want to turn away possible "seekers" by the strict policy of closed communion. Other pastor's prefer to play loose with the meaning of closed communion, preferring the more friendly "close communion," meaning that as long as we are "close" in our theology, we may commune together.
I have been a parish pastor now for 4 weeks. We have had non-LCMS visitors every week. I have had to explain to them our position and it is a hard thing to do. I suspect that the real reason for loose practice in regards to closed communion is because it is hard. It is much easier to take an attitude of "gospel-lead," self-righteous and missional compassion than to take the time to teach, explain and possibly offend.
In short, I do not like closed communion, but that is because my sinful nature always want to rebel against God and His Word. I also do not always like proclaiming the Law which accuses. Being faithful to God's Word is not easy, but with His guidance I will continue to faithfully serve His people with His Word and Sacraments.