How Congress encouraged vote fraud

It turns out that not only are there are more people registered to vote in Detroit than that city now has residents over age 18, but that the Democrats have wanted it to be that way ever since the last time they controlled Congress.  
The 1993 National Voter Registration Act, which took effect in 1995, requires local officials to wait two federal election cycles before purging their voter rolls. That means that all cities carry ineligible voters each year.
Thus the 47,000 cards returned as undeliverable after a mail canvas of Detroit voter registration rolls in 2005 could not be purged until 2009.   Since then Detroit has lost even more voters.  According to the article, Daniel Baxter, director of elections in Detroit says that after the 47,000 named from 2005 are purged next month the city will report its voter registration at about 575,000.  Kurt Metzger, director of the Detroit Area Community Information System reports that this number is still too high based on Southeast Michigan Council of Government (SEMCOG) population figures and age distribution report from 2007. 
He estimates that Detroit's population is about 853,000, which includes 603,000 people over 18 -- 30,000 fewer than the city reported as its total of registered voters.

"Even if you had 100% voter registration, which we know we don't have, you could not have numbers that high," he said. "Nationally, 67.6% of Americans are registered to vote. For African Americans, it's 60.9%."

Metzger estimates that Detroit's voter registration is closer to 422,000.

Those who move in 2009 cannot be purged from the rolls after 2012.  Nor is this problem confined to Detroit and other large cities in Michigan. Milwaukee, Philadelphia, St. Louis and other rust belt cities have been losing population since 1995 all the while reporting 90% plus turnouts for Democrat candidates amid ever growing allegations of vote fraud.   
My question is why wasn't this law changed after 1994 when Republicans controlled Congress?  Count this as one more example of why so many middle class voters are fed up feckless politicians in both political parties.
It turns out that not only are there are more people registered to vote in Detroit than that city now has residents over age 18, but that the Democrats have wanted it to be that way ever since the last time they controlled Congress.  
The 1993 National Voter Registration Act, which took effect in 1995, requires local officials to wait two federal election cycles before purging their voter rolls. That means that all cities carry ineligible voters each year.
Thus the 47,000 cards returned as undeliverable after a mail canvas of Detroit voter registration rolls in 2005 could not be purged until 2009.   Since then Detroit has lost even more voters.  According to the article, Daniel Baxter, director of elections in Detroit says that after the 47,000 named from 2005 are purged next month the city will report its voter registration at about 575,000.  Kurt Metzger, director of the Detroit Area Community Information System reports that this number is still too high based on Southeast Michigan Council of Government (SEMCOG) population figures and age distribution report from 2007. 
He estimates that Detroit's population is about 853,000, which includes 603,000 people over 18 -- 30,000 fewer than the city reported as its total of registered voters.

"Even if you had 100% voter registration, which we know we don't have, you could not have numbers that high," he said. "Nationally, 67.6% of Americans are registered to vote. For African Americans, it's 60.9%."

Metzger estimates that Detroit's voter registration is closer to 422,000.

Those who move in 2009 cannot be purged from the rolls after 2012.  Nor is this problem confined to Detroit and other large cities in Michigan. Milwaukee, Philadelphia, St. Louis and other rust belt cities have been losing population since 1995 all the while reporting 90% plus turnouts for Democrat candidates amid ever growing allegations of vote fraud.   
My question is why wasn't this law changed after 1994 when Republicans controlled Congress?  Count this as one more example of why so many middle class voters are fed up feckless politicians in both political parties.