Birchall is upset after not being part of the Galaxy party invited to the White House this week after helping them win the MLS Cup last season.
The former Port Vale midfielder tweeted: "All the best at the WhiteHouse 2morrow lads @LAGalaxy,me and @FrankieHejduk2 werent invited after we gave everything to win the cup but hey!"
And then: "A lot of people asking why me and @FrankieHejduk2 didn't get invited, we wish we could answer that,love the fans but its so so wrong!!!"
Crew television analyst (and former midfielder) Duncan Oughton got into it, too: "Can't believe @FrankieHejduk2 & @chrisbirchall7 not invited to the White House as key parts of the 2011 Champs. Glad we have them #Crew96"