Replies

Not only that, but Louisiana quickly changed their militia law, specifying that it would be composed of white citizens.

10 months is quickly?

The legislature’s reorganization of the militia also affected the Native Guards. Because the new statute specified white males and disbanded all existing militia units as of February 15, 1862, the Native Guards ceased to exist on that date. Their demise was temporary, however, for Governor Moore reinstated the Native Guards on March 24 after the Federal navy under Captain David G. Farragut entered the Mississippi River. (Link)

Apparently, Governor Moore didn't get the message. The Louisiana Native Guards were abolished for only about 5 weeks.

10 months is quickly?

More like eight (May to January).But the militia act only formalized what had been de facto before. The preceding four paragraphs of your source:

The first test of Confederate willingness to accept the Native Guards in the spirit of true fraternity had not gone well. On September 28, 1861, word had come that Union prisoners captured at Manassas would arrive in New Orleans within two days. Their arrival was an occasion for much excitement, and the troops selected to guard the prisoners as they marched from the train station to the city prison would be afforded a great honor. General John L. Lewis of the Louisiana militia suggested that the Native Guards be allowed to escort the prisoners of war. But the Confederate commander in New Orleans said no, and white militiamen were picked instead.
Despite the rebuff, the Native Guards continued to demonstrate their support for Confederate Louisiana by participating in two grand reviews- one on November 23, 1861, and a second on January 7,1862.
Enthusiasm among the Native Guards for the Confederate cause did not last long, however. Many of the men were still without uniforms or equipment, and one company had only ten muskets. Absenteeism increased when it became apparent that the Confederate authorities did not intend to provide the Native Guards with either the status or support they afforded white soldiers.
When the state legislature passed a law in January, 1862, that reorganized the militia by conscripting “all the free white males capable of bearing arms… irrespective of nationality.”